Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d54670e9a5ddc1d…

MALICIOUS

PDF

78.8 KB Created: 2021-04-20 08:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b5ad727e4c7c62d7a1d728ed8c8437ec SHA-1: 102a1b67497882514b558b238041555caadfbd45 SHA-256: 9d54670e9a5ddc1d206b6645d946b1d7b7be480f4d929e8ab49c6f5f1bd7bf4b
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://jumiwimov.ru/strik?utm_term=texas+instruments+nspire+cx+cas+review PDF link annotation
    • http://dazavaluk.mygamesonline.org/11435451695.pdfIn PDF document text
    • http://wifisef.medianewsonline.com/83151199722.pdfIn PDF document text
    • https://cdn.sqhk.co/vonirosidejo/icqhahh/80445469472.pdfIn PDF document text
    • http://icub.tech/796664821111ymss.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_6056139ddd573.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/ay2jikp/superhero_compression_shorts.pdfIn PDF document text
    • http://torixewiser.medianewsonline.com/asi_hablo_zaratustra_frases.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_60466c1bd10b1.pdfIn PDF document text
    • http://allieshouseofhope.com/moto_g6_plus_specs2ef5b.pdfIn PDF document text
    • http://ctuxuu.com/wosemuniruzaramojezalise4z675.pdfIn PDF document text
    • https://cdn.sqhk.co/tonuviwa/MfrIojc/destiny_s_child_christmas_songs_youtube.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/nejugoxipik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420747/normal_60035e19aab33.pdfIn PDF document text
    • http://abreudesigns.com/intermatic_electrical_timer_switchgt79h.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/hdBX3jd/running_routes_map_my_run.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/lgsyRig/beast_quest_xbox_one_achievements.pdfIn PDF document text
    • http://weraka.online/gobirefelobopapagibopdqtuw.pdfIn PDF document text
    • http://thedouche.xyz/92825442318z8lyw.pdfIn PDF document text
    • http://stav-games.ru/ziretaxozilepots17t6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4228e3e8-6e56-436b-9c2a-5710a6c3a216.filesusr.com/ugd/e32dc8_b1d8b7be646645f4950cc8efcd243ca2.pdf?index=trueIn PDF document text
    • https://21036261-01f9-4725-a342-2b8b08d10099.filesusr.com/ugd/d0cbc4_7fe88b6fd4ce4d0789c8e05aa0b4c58c.pdf?index=trueIn PDF document text
    • https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_d7177b7243b64793817c0c2871cdd352.pdf?index=trueIn 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_off0000f347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF347 5216 bytes
SHA-256: 2a08488c896e1f2e87615c20b5b39823f5320e21eb278603bb79998a2e38fa1f
font_01_sfnt_off00010501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10501 11860 bytes
SHA-256: 4338814c406dd2290462c5f4a31661f3277f1a3e50e8403e1b0bc495f687c7a9

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