Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fe4c2a37b5298e…

MALICIOUS

PDF

81.2 KB Created: 2021-04-20 07:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 151f9bea77d9822667f2829f77aa48f8 SHA-1: dae00c26c31bd6ffce5a21c643f6c3ec40d7a3e0 SHA-256: e9fe4c2a37b5298ef2305806322dfeb96b134f530e92107b284b4b3b958274f9
146 Risk Score

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 0.9992

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/strik?utm_term=periodic+table+basics+worksheet+answers+pdf PDF link annotation
    • https://cdn.sqhk.co/xuxinugad/Yhcjeje/cockatrice_osrs_slayer_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/jgejfig/floating_monkey_bars_ninja_warrior.pdfIn PDF document text
    • http://dabopoxele.getenjoyment.net/accounting_for_dummies_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxujagemo/A2Wjbgf/craftsman_electronic_radial_arm_saw_manual.pdfIn PDF document text
    • http://segwaywheelchair.ru/3422739012p4f19.pdfIn PDF document text
    • http://domastmsk.space/dns66_block_ads_apkn0s93.pdfIn PDF document text
    • http://vigastlens.xyz/tcl_tv_manualsuw4sq.pdfIn PDF document text
    • http://a-trvl.ru/72437210788aay74.pdfIn PDF document text
    • http://mukinokelek.mygamesonline.org/cantor_s_intersection_theorem.pdfIn PDF document text
    • http://redita.fun/lectio_divina_journaling_sheet5hgul.pdfIn PDF document text
    • http://majikok.mygamesonline.org/1626051950.pdfIn PDF document text
    • http://teksol.xyz/28532713965u0umg.pdfIn PDF document text
    • http://afracheat5.xyz/black_hawk_down_soundtrackmsy4f.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/Tjjjejg/resoje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/how_to_be_a_good_public_speaker_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/39421008307.pdfIn PDF document text
    • http://nunivigel.epizy.com/fokesupuzaz.pdfIn PDF document text
    • http://sidoxabikuw.rf.gd/72967080719.pdfIn PDF document text
    • http://xarujusezofa.epizy.com/42368169079.pdfIn PDF document text
    • http://rinejifivazori.epizy.com/lebomixogigelevo.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/69378170420.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/test_direction_examples.pdfIn PDF document text
    • http://kunasajijujaf.rf.gd/approaches_and_methods_of_teaching.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8D 5540 bytes
SHA-256: 1bae3764ac18bfcdb8e5096fcee88142435caeb785e884f8d825b1b064de2b09
font_01_sfnt_off00011269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11269 10708 bytes
SHA-256: ac30a04864d8c2d2993ee97bb4914f17c8a2bb1698accdcff4a3f0855c4ca7ea

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