Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06f6ec431472ccb…

MALICIOUS

PDF

82.8 KB Created: 2021-03-15 22:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b964cac8003247404682f6815bf9f5d4 SHA-1: 53e496f77220d7411349237aff8202ce734d9d78 SHA-256: d06f6ec431472ccb0bf1bdde7344fcda45cd95ac0148c59f83fb7a40b6098301
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 0.9997

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://dafemum.ru/strik?utm_term=principles+quotes+ray+dalio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481411/normal_5fe845d5a5400.pdfIn PDF document text
    • https://cdn.sqhk.co/juselivo/haBjgjx/vast_tv_guide_spearfish_sd.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/royal_sovereign_portable_air_conditioner_parts.pdfIn PDF document text
    • http://jenerotisa.mywebcommunity.org/67844287186.pdfIn PDF document text
    • http://kosodidaxelo.22web.org/bogobonagepumatiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_5fe63a2d65486.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/9gjhjoU/sexolosideweguwajidizufa.pdfIn PDF document text
    • https://cdn.sqhk.co/tobetusibu/rjfSLPU/android_emulator_for_pubg_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zukagebogewivur.epizy.com/wemefari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f139a711-7574-4fab-a13f-c805b960bd26/la_compuerta_numero_12_analisis.pdfIn PDF document text
    • http://turojupa.epizy.com/rick_and_morty_comic_vol_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72577dc8-3d73-4891-a65b-f3dab642fd02/tissot_t_touch_solar_2_price_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c70b2b-6e83-41fb-ae71-33e810d8ec9d/lopamekogogufabuxutofuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64eb5f1b-453b-47aa-a5df-dc408d1d8059/roromagebezaxonorudurop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2bd06af-9d9e-4ff9-90ed-669dd11c9563/41849183974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19a6c3d-bd81-4be5-b09a-b48733ad0299/washington_football_team_nfl_schedule.pdfIn PDF document text
    • http://bagugexasorip.myartsonline.com/15567647462.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/shadowrun_returns_hong_kong_review.pdfIn PDF document text
    • http://nununad.myartsonline.com/rusagamadirab.pdfIn PDF document text
    • http://ruzojonawa.epizy.com/lufat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71b8178-b97f-4d4e-8f56-b234c8017d52/how_many_quarts_of_oil_does_a_2017_lexus_rx_350_take.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_off00010788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10788 5296 bytes
SHA-256: 6dd2c39677919ba7e676561212b7814b76bb204ccc2f45eb32f3f0de6447072c
font_01_sfnt_off000119a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A0 10960 bytes
SHA-256: 637cb06517dd6316da94a2e2501122cc9c387f9647f5d552e33c79b6a5f1d359

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