Malicious PDF — malware analysis report

Static analysis result for SHA-256 980c3772431383af…

MALICIOUS

PDF

72.2 KB Created: 2021-05-15 05:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dc200dbed95c2276c920e206dbaa88c0 SHA-1: 514f70ef15f3420efc8f11560c3d4836c1cf9014 SHA-256: 980c3772431383afa30efa1b6e0c17f5c1d7880be5c832e232589d3e5216e1bf
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=senior+machine+learning+engineer+salary+nyc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450260/normal_606a278f73696.pdfIn PDF document text
    • http://theporte.xyz/31872117050adton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377647/normal_5ff14cf16c171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_605b634116e6b.pdfIn PDF document text
    • http://forezakineru.iblogger.org/deed_of_sale_real_property_template.pdfIn PDF document text
    • http://bigonetudukori.iblogger.org/65413931892.pdfIn PDF document text
    • http://znakomstva18x.site/441845256vp55f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368951/normal_5ff655919bec5.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/gekifenarojisoto.pdfIn PDF document text
    • http://kugufenabigidef.iblogger.org/8660620114.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/nobuzulufuvena.pdfIn PDF document text
    • http://kifikawi.66ghz.com/guild_wars_2_crafting_guide_400-_500.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/mokim.pdfIn PDF document text
    • http://gomesuzos.mypressonline.com/birthday_party_planner.pdfIn PDF document text
    • http://memexeti.66ghz.com/gui_booter_2017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_22f57154e7e742399125abf86bca2fbe.pdf?index=trueIn PDF document text
    • http://gogejovuxog.epizy.com/pixanarokigis.pdfIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_cb037cf46db44b51ab7f27894439b5d6.pdf?index=trueIn PDF document text
    • http://zixadadafupeg.epizy.com/fimigutefumavazutinozo.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_601bf3792fdd4788836d12cfe3a2b3a6.pdf?index=trueIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_e443da2c6a734866a895face9507444d.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_off0000de11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE11 5416 bytes
SHA-256: d0522eaed1b566c2f466512f8a1fbd21e29fd2b21b9567fbe0b0e43650bfc333
font_01_sfnt_off0000f054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF054 10300 bytes
SHA-256: 46e37f4dc13459730677b0ca099289b270fb866db4483c5ef8ebd1826d38faf9

Open this report in the interactive analyzer, or submit your own file for analysis.