Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde3426eb91bd269…

MALICIOUS

PDF

106.3 KB Created: 2021-05-12 10:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f21964c46cd85a0657456e08884537bd SHA-1: 1bf876e9284f8c8f852ae9f348034f462360c7e4 SHA-256: fde3426eb91bd2692b17ace20416b562e70443c9ed6b8f519a80d85746c18950
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9794

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://seumenha.ru/strik?utm_term=overthink+meaning+in+urdu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392191/normal_604ca15e7976d.pdfIn PDF document text
    • http://visujoj.22web.org/ridawex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_60343d003f6ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465269/normal_600b46af0eb78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5ff928e0a25a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412170/normal_602ca07113aa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456165/normal_60179455ba777.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402289/normal_5fde81774f8b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/fofeguj/xugowurazu.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/hdfc_mutual_fund_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e373f65-b148-493e-b849-20b81803be34/xegegatugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74646906-639b-4b85-812a-21969ddab4bb/colt_ar_15_upper_receiver_markings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a676017-d6db-40ef-a6f3-4eeeaa1b6162/garmin_vivofit_4_vs_fitbit_inspire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15508678-4871-4bb6-96dc-2638f0cd47b5/zipuribopawajijuwube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b8ffa65-7e87-4f76-a797-e4022e9e1528/tapatezafip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71096088-0bd3-4d9f-8747-567305beebad/bixidalidejubireti.pdfIn PDF document text
    • http://namuruxelakesig.rf.gd/water_pollution.pdfIn PDF document text
    • http://ladisopezaxak.epizy.com/23466568368.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/fighter_5e_battlemaster.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/foxboro_reporter_classifieds.pdfIn PDF document text
    • http://magajavopisili.epizy.com/96123441046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e67daa-dd53-4be0-bab4-f98e6493f3a2/kitchenaid_stand_mixer_blue_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50781986-a18c-45c8-a3fb-33337b8a5b6d/19198089020.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/riyad_us_saliheen_arabic_free_download.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00016d00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16D00 18916 bytes
SHA-256: 22d14c633e129a95453aa8e43f6c7552f5d7dc17beb62c490afef4548683a5e8
font_00_sfnt_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 5684 bytes
SHA-256: b860fb277252ee9b20429d811032d938c2d219a75430a49174b6e9a82640b652
font_01_sfnt_off0000fbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 5180 bytes
SHA-256: d6b6b66f595f362b47b1e5eea533f959cc147f0e2e5be757541c6af5d30e4d73
font_02_sfnt_off00010d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D37 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_03_sfnt_off0001183d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183D 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_04_sfnt_off000122f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F4 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_05_sfnt_off00012cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC0 6640 bytes
SHA-256: eca62b72654736461a635ba366d09d794777fd95c58152d2b251becdfce657e0
font_06_sfnt_off00013e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5D 15308 bytes
SHA-256: c02bd6aa96a7ef7728353349192f38cb361885c5a4843ccaca2c21c12f2bddce
font_08_sfnt_off00018bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18BD9 3276 bytes
SHA-256: 51c1d5fa29146058fbc649eac7766b85490f6942bd67486bd14cc46e9087474c

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