Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab1da86cd057b0b…

MALICIOUS

PDF

92.1 KB Created: 2021-03-29 11:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ae35880cfa22bdd86913023245fa0542 SHA-1: 176635c1dded154cf84b0c8cd75888acca6b09a3 SHA-256: dab1da86cd057b0b20d651e75bdf4e211caf969e77730cc125ccf2c6e989e073
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 0.9996

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://soxebez.ru/wix?keyword=tv+listings+cape+coral PDF link annotation
    • http://lovewaits.ru/lines_and_angles_worksheet_grade_49ljp0.pdfIn PDF document text
    • http://fudazozotakaxal.mywebcommunity.org/twilight_saga_2008_full_movie_in_hindi_hd_free_download.pdfIn PDF document text
    • http://nukicew.xyz/complete_predicate_worksheetssi1ba.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://zikemuwebiwolim.weebly.com/uploads/1/3/5/9/135992964/2d6db313b03.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/127c2b80d7c53.pdfIn PDF document text
    • http://kemytbok.xyz/star_trek_vengeance_premium_pinballvg9sf.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://xploitcrew.io/cedex_bio_ht_manuals0k7y.pdfIn PDF document text
    • http://meetly.space/rascal_mobility_scooter_reviews_uknuua9.pdfIn PDF document text
    • http://bobr.space/4474593326dcotd.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/wokumerivu.pdfIn PDF document text
    • http://dream-stat.ru/40258282276eoxp.pdfIn PDF document text
    • https://najabokaxosol.weebly.com/uploads/1/3/5/3/135300306/af35904162a523.pdfIn PDF document text
    • http://guitar.su/pazinumozemuvesip9k3hg.pdfIn PDF document text
    • http://sodalabs.pro/warcraft_3_frozen_throne_human_guideqpx4c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac9881c-448a-410c-bd01-5d7ee616a8b4/13658068341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ec34e4d-eaf6-4514-84ed-7c3fddc8db7b/74131499138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4aebc8-999b-4c02-9325-976904c246a2/horse_drawing_simple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61bb37a0-c0ea-4cde-9c35-1d1625e4d27b/jagoxi.pdfIn PDF document text
    • http://rivetibixonapaz.myartsonline.com/pdf_splitter_app_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f15fc8-acc9-405b-a3f0-a3af3f876e5e/14052993200.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001285d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285D 5112 bytes
SHA-256: 4effbaf9ff70a0c14417ddab67b03108f8a309a9225d700058cf2a595af957cb
font_01_sfnt_off000139e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139E0 12008 bytes
SHA-256: 74fd24ce615b540ad2ba09cf54d5016ee464fa24a87f2e50c4e00cbaf4333bc7

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