Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8a8051ea298d0a…

MALICIOUS

PDF

78.8 KB Created: 2021-03-02 06:51:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e11483679362be2ae902fd0103ddf39f SHA-1: a2829cd7373299ea8af0669357a1c9eefc285433 SHA-256: 6c8a8051ea298d0a9c26738570205511541445116213437234989d938d3fb780
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or SEO manipulation scheme.

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 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.
  • 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://mezovuduw.ru/wb?keyword=dream%20interpretation%20dog%20bite%20neck PDF link annotation
    • https://cdn.sqhk.co/ramidazumiko/aMgch1f/petrolhead_paradise_hack_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/namulofilox/ntDiajb/bloons_tower_defense_6_unblocked_weebly.pdfIn PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/pufuxuzafupu.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/B7Dr6jc/farm_trucks_3d_harvest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477156/normal_5fd9cb713882c.pdfIn PDF document text
    • https://debawusajatowi.weebly.com/uploads/1/3/4/7/134707072/d4adaeab86b9b0e.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/ijeaaih/99678655550.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/woxewiwupir/fudasatud.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/double_bed_sheet_pillow_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/bricscad_v15_free.pdfIn PDF document text
    • http://nasuxenabo.epizy.com/85509281505.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/97561500325.pdfIn PDF document text
    • http://dowisekek.rf.gd/guguzulapuwugusaxebupo.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/50945069455.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6A 5172 bytes
SHA-256: 22b78bafe57c9285d48e8dba922a32ab4a4fc15a36f1ee14075e817b94860c45
font_01_sfnt_off0000fde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE1 10020 bytes
SHA-256: d431d070a509bee940e64801be0692fbfb6a16ccd425f284159d35ba562eb888
font_02_sfnt_off0001203b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1203B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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