Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b9828906b95037…

MALICIOUS

PDF

77.2 KB Created: 2021-03-24 16:02:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: be194739b852f82ec03cd0d0b85c6260 SHA-1: 71acd2b5685a1d90bf8419e8a78b8e9fa458b70c SHA-256: 94b9828906b95037303a6b3ead2a179daf95e2abbd26cd1747146570dd856954
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 0.9998

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://bologen.ru/award?keyword=axis+bank+fd+interest+rates+for+senior+citizens+pdf PDF link annotation
    • http://ufenmac.com/16624163688fbufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479441/normal_602d81bfcaa83.pdfIn PDF document text
    • http://dkmz2.club/video_whatsapp_status_download_punjabieb5n0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422918/normal_5ffc816f5887a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_6059fc5431bd2.pdfIn PDF document text
    • http://amsidgi.xyz/vizusapipaperulenir772ug.pdfIn PDF document text
    • http://dkmz2.club/banner_ads_template_aiv0s4a.pdfIn PDF document text
    • http://tvoeobrazovanie.fun/21669209854jv2gn.pdfIn PDF document text
    • http://idealica-it.website/bullying_los_multiples_rostros_del_acoso_escolarzzcvz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499958/normal_6005341a76c7b.pdfIn PDF document text
    • http://fly-drive.online/43890332953d0dz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f3cd47-51dd-4200-af81-4fa52cff5dae/kefofubulotu.pdfIn PDF document text
    • http://kipinoda.rf.gd/zejakeduw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8a0a26b-c0e9-455e-badb-836d1dd3e1eb/rememil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23669389-3cc8-4b1f-9d3a-ea9dca8098bf/samsung_un32j4000af_remote_control.pdfIn PDF document text
    • http://vuxifonodine.epizy.com/5441553339.pdfIn PDF document text
    • http://semafomor.epizy.com/nogejazonufikexokib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e09d5e40-cee6-4c4d-881b-ff1b62cd542f/75747647487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c9f44b5-4335-4c27-9278-b1e2db19c348/zatowujulidemavugopirulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f043138a-fcad-4b5e-a5ad-ccbc888e26fd/charting_outcomes_2019_reddit.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC6 5428 bytes
SHA-256: 70151ffad5e53fff6a8ee3faf9c8238eff625beddb65eb542587f97c9d7e121e
font_01_sfnt_off0000ff5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5A 11712 bytes
SHA-256: b598064ebca2b6083f78e2b0c5c5627829be8654c11eaffe92effbceaa1a0e39

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