Malicious PDF — malware analysis report

Static analysis result for SHA-256 902d3f74062ed477…

MALICIOUS

PDF

70.0 KB Created: 2020-11-22 19:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: aa67d6846272827e3c7cee53e19ec267 SHA-1: 1579d8e45307ea11f4c5277a6aa1d582bcdff38e SHA-256: 902d3f74062ed4779085a7d54c4d8f55f581e2928d57b9a615486e876d014652
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains a link farm of external PDFs, with a primary lure pointing to an SEO redirector disguised as an annual report. The presence of external links suggests the document is designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/aws?utm_term=cyxtera+annual+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5f9c82d7478df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389106/normal_5fa5400d013a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5f8effe9d84d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fa83e08b4f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fb69203186dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f88d9ce2dd93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_5f91e095ccc18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459322/normal_5fa98397c58fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f8724de973b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_5f89381bbdf11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5f8f7524924e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_5f976e03d7e70.pdfIn PDF document text
    • https://kevegojap.weebly.com/uploads/1/3/4/8/134863313/8758193.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/39769661-dfb6-4633-bd31-264a10ac70d2/integrated_chinese_workbook_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfc843ff-858d-4a73-b3ad-c7f3ad2ef03f/supco_m500_megohmmeter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/m6_bolts_in_standard.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 5

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_off0000d686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD686 4708 bytes
SHA-256: 28c93fd2504a2a7eea01e62dd816e03d891c68462bcc8bfd9a6df793c3fb4079
font_01_sfnt_off0000e69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69E 10764 bytes
SHA-256: 4349547c0878af945333935f2a49a63ae4a55a3091fa82e81adce08ae5909334

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