Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eeeeaecd94e7015…

MALICIOUS

PDF

95.3 KB Created: 2021-04-08 04:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 32b498a81320066899bd2d4d24668300 SHA-1: 587afbbb3a13e98a68fce7e8fb475135803fdb67 SHA-256: 2eeeeaecd94e701547adc3e3c27bf12cb052acf551e4977ca68cfdb9562423e6
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. 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 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/wix?keyword=ashley+furniture+trinell+bed+assembly+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486199/normal_602eaf255cf79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_604183483eefd.pdfIn PDF document text
    • https://cdn.sqhk.co/bafuberudod/egNP8Jl/56747228532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473445/normal_604f0e41e6ae9.pdfIn PDF document text
    • http://sedowogefinolew.iblogger.org/adventurers_league_season_8_dm_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/ih4sjd9/buwamorolavudarutem.pdfIn PDF document text
    • http://silvanozito.online/bexakidufakovevewaxuke5epfj.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/egisXkm/real_names_motorsport_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/wifepodilojo/iiaB6Jn/zuvenunagimax.pdfIn PDF document text
    • http://deromgroup.com/old_navy_shipping_delays_december_2020l3doa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fexizabo.rf.gd/31838082437.pdfIn PDF document text
    • http://badugumafuzalij.rf.gd/61258119123.pdfIn PDF document text
    • http://kagurug.rf.gd/likuw.pdfIn PDF document text
    • http://guxajez.rf.gd/jilewazozedimofer.pdfIn PDF document text
    • http://tofawazod.epizy.com/especies_amenazadas_mexico.pdfIn PDF document text
    • http://wiwafejopof.epizy.com/gimoduralik.pdfIn PDF document text
    • http://rupegofiminatef.epizy.com/blu_ray_movies_2019.pdfIn PDF document text
    • http://ginokaze.epizy.com/keman.pdfIn PDF document text
    • http://warodisomadux.epizy.com/bypass_quota_google_drive.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12076 5492 bytes
SHA-256: 019563f5ae3603c68bbba8bc0bb64b2e5783f40fc16a8b6aabe8f9ad47be1f16
font_01_sfnt_off00013302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13302 11604 bytes
SHA-256: d68f0bde6eafd4426194e95cbf27f0c1b914711dce995a641b49525709d03351
font_02_sfnt_off00015aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AA8 16060 bytes
SHA-256: d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc

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