Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc784d031642dd40…

MALICIOUS

PDF

69.0 KB Created: 2020-12-23 21:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 305da75a561bf74d7f0eed79ae272e63 SHA-1: e06cdf0292bbafd39184d90ecbf5b60839127453 SHA-256: cc784d031642dd40429ba63cd5ef6f4eca8335f8ef40b4a3362d7a9e29706c4c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating a likely attempt to redirect users to malicious sites. The presence of external URIs and link farm heuristics strongly suggests a phishing or malware distribution campaign.

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://traffset.ru/strik?utm_term=bombas+socks+womens+where+can+i+buy PDF link annotation
    • https://cdn.sqhk.co/tonuviwa/gcjfwhh/noketuruluxafikaga.pdfIn PDF document text
    • https://gebopudexor.weebly.com/uploads/1/3/4/4/134482947/vesajige.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/sigomufilulupurux.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/dadezosaxov_lipebok_medadujosujix.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/gdgfTge/55021619620.pdfIn PDF document text
    • https://cdn.sqhk.co/ripigopes/hVibXig/gifugadad.pdfIn PDF document text
    • https://sapakokejepudig.weebly.com/uploads/1/3/4/4/134457578/pewetezob-lomasu-rupona.pdfIn PDF document text
    • https://xuzelakojit.weebly.com/uploads/1/3/4/5/134593048/7d7899f1b9078ff.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/8fba70a2-2f6c-40bb-b748-dfd1771f299c/89200089347.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/tokabanofamuxilaridelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa56bb68-1e3b-4021-afb1-b91c65930a25/3049887978.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/636976f9-2893-46d6-b9d1-77eae17b158c/76413708802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76deeeee-410b-440c-a46a-00c013580f6f/quadrilateral_properties_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/profill_capsule_filler_manual.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_off0000d204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD204 5456 bytes
SHA-256: fda0fe5d9db2ba66ac6d29f1041cfea9b23511d72e714cbbdb4c13e3b065c85e
font_01_sfnt_off0000e483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE483 10164 bytes
SHA-256: b38b2612880ba0d7ff873dc9ff9fe2d60cd3a8fdafc31edda542192a347490e4

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