Malicious PDF — malware analysis report

Static analysis result for SHA-256 0167149a6bec98c3…

MALICIOUS

PDF

80.5 KB Created: 2021-03-19 20:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 353911ce1229f7496255318ee07f6cc0 SHA-1: 7be83ce4c13fb2eb07f67e27b179122ee6f0802f SHA-256: 0167149a6bec98c37d278f769914095254add5d373c9f80eba22b74460306595
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed for SEO manipulation. The primary URL, 'https://lozipotod.ru/aws?utm_term=can+i+buy+bitcoin+through+cash+app', is presented as a lure related to cryptocurrency. While no scripts were explicitly extracted, the PDF structure and extensive external linking suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/aws?utm_term=can+i+buy+bitcoin+through+cash+app PDF link annotation
    • https://cdn.sqhk.co/konidadelan/jIdhbjp/vfx_attack_zombie_costume.pdfIn PDF document text
    • https://cdn.sqhk.co/ribegibonot/jiVifgh/passport_application_form_online_registration_documents.pdfIn PDF document text
    • https://cdn.sqhk.co/wifurovud/hiihiNE/fisijulegefipusajin.pdfIn PDF document text
    • http://net-klientov.ru/tapeposogudd2.pdfIn PDF document text
    • https://funapimezu.weebly.com/uploads/1/3/1/0/131070883/benegimetejawom-riravojopox-dageparibiginij.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/dw9gic4/xexapagu.pdfIn PDF document text
    • http://dokaxirugik.medianewsonline.com/neumonia_complicada_pediatria_2020.pdfIn PDF document text
    • https://duzinalanidik.weebly.com/uploads/1/3/4/7/134760416/a8e4127d.pdfIn PDF document text
    • http://mevesepegubisis.scienceontheweb.net/64623675099.pdfIn PDF document text
    • https://sixoribena.weebly.com/uploads/1/3/4/8/134848884/xibulunajexawug-zunurol-wabewoxo.pdfIn PDF document text
    • http://wordwild-store.com/magnetism_worksheet_answer_keyga5vm.pdfIn PDF document text
    • https://bojibelatos.weebly.com/uploads/1/3/4/0/134040608/pimobitoginuvivuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dowadotiju/jumalisunikazirefane.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/sinagixodijuwuxoloj.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/action_replay_powersaves_license_key_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/pearl_of_great_price.pdfIn PDF document text
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_647a409da73c47f3a78896486f982b05.pdf?index=trueIn PDF document text
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_343b4ae8f2204bee9c0c44cd715fe781.pdf?index=trueIn PDF document text
    • http://fazobelo.onlinewebshop.net/nsfas_application_form_2020_tut.pdfIn PDF document text
    • http://gototura.myartsonline.com/dabogufowat.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_219fb0541e5c452d910c2b28457d48db.pdf?index=trueIn PDF document text
    • https://eda15335-3b41-4752-a6ea-ca28a3d9ec24.filesusr.com/ugd/db55a9_3e7faf01d56c4d3e8aa0f79d91508494.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nefunupu/petesega.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2D 5192 bytes
SHA-256: a4816eeeca0940295db2d3c4f90cdd4f09af7341075e535b8778fb83bf5efaad
font_01_sfnt_off0000fec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC4 11128 bytes
SHA-256: 40db9dcc4244522f71b067e0ba437c7df1fa1cd6dac77bd00df179a075674fff
font_02_sfnt_off000124e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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