Malicious PDF — malware analysis report

Static analysis result for SHA-256 12298c6fc89e2beb…

MALICIOUS

PDF

67.8 KB Created: 2020-11-21 01:00:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 08210414936b0b7fd53cb93e8d90d07a SHA-1: b4d6c733358e32147b7f1659b5361142b03e1c36 SHA-256: 12298c6fc89e2beb3b32904889667f963e527257d838b98c727fad6fa57460c0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains a large number of external links, with one pointing to 'trafftec.ru', suggesting a link farm or redirection to malicious content. The presence of numerous PDF links, as flagged by the 'PDF_SEO_LINK_FARM' heuristic, indicates a coordinated effort to distribute malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=what+are+the+conventions+of+writing PDF link annotation
    • https://bawigadumifop.weebly.com/uploads/1/3/4/4/134494387/vaxatomekafenovot.pdfIn PDF document text
    • https://wamebadafexu.weebly.com/uploads/1/3/4/0/134040762/8417219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_5fa354499abae.pdfIn PDF document text
    • https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/400b45a438ab3.pdfIn PDF document text
    • https://wozedekasejop.weebly.com/uploads/1/3/4/7/134703393/bakigibazoz.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/d95602eb-b7c6-46db-84f9-4ebf6990693c/hatley_pajamas_boys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab93127-9843-4f02-8519-4a3b24a1ebf2/mukirigazi.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/xunulubibipadikapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57457b36-8d69-48c1-b115-0b19c77e868a/51068964636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1d8ac5-4877-4443-a001-698262eb9395/45265132653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a466be-005a-4045-b368-d72c5e028a0c/leronifiratik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81f83139-bf0e-4dd1-a633-d6feda40f215/20391294655.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0A 5276 bytes
SHA-256: 140e81b545bbbb100e052cb65cb5514cf2f490d82803ca293df31cd48bc95b15
font_01_sfnt_off0000e018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE018 9708 bytes
SHA-256: f5d50ba14fb7e2a868e9b6a8fc82426b2ea103b557fa6fe6e8adf7d2b8777096

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