Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7aea2a418a9714a…

MALICIOUS

PDF

71.3 KB Created: 2020-12-21 10:23:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: daf00247d32a3d26aded82887970c7ab SHA-1: a747deea6f4bc9ee427cb84c1bea7ab7d1ff9fcd SHA-256: a7aea2a418a9714acc62296304e9c5309451a48025f195990aa35fda76fba28b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'trafffe.ru'. ClamAV detected the file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of embedded links and the detection signature suggest a phishing or malware distribution attempt, likely using a social engineering lure related to a 'motor labor guide'. No scripts were extracted, but the PDF structure itself facilitated the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=motor+labor+guide+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369764/normal_5fcc374fafc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459464/normal_5fb608b55309f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417119/normal_5fc893ee5b0b1.pdfIn PDF document text
    • https://kiwiwutirove.weebly.com/uploads/1/3/4/7/134707888/votuxemomadelarul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366625/normal_5fdde85729370.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476443/normal_5fcb720e844ff.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/8606c9a4-60a6-4830-86d5-5ddbcf0d14b0/jeb__minecraft_sheep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd1e0c89e1c4b8fb81223/t/5fca7cb44e3f23050dedb867/1607105717470/zaza_nails_and_spa_braintree.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55f80bdb33045eee00a06/t/5fd1c7cc5e090321cab39a87/1607583695847/minecraft_mod_1._12_2_wands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe74b248-3b26-4fd4-9e4a-76419eddd844/blades_in_the_dark_playbooks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f1926a-491f-4015-92ff-f1b4d66f26bd/88303350606.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_off0000da38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA38 5176 bytes
SHA-256: 6e56a5abdd2f1f015e537c76d97ed847a098b29007a89eceba49491ada27fa0e
font_01_sfnt_off0000ebeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEB 10784 bytes
SHA-256: 2f3b4e17c5e34f7ab1e156d88988949f28de0c780bacddc399e4cfcd5bb17488

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