Malicious PDF — malware analysis report

Static analysis result for SHA-256 4647eaf1fbc0ba0e…

MALICIOUS

PDF

31.4 KB Created: 2020-08-27 15:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c625dc92df7b5daa93db1b360fface8b SHA-1: d59fdda7e9b62f6c12e1bcfe6cedc24a65758e7f SHA-256: 4647eaf1fbc0ba0e16acb814ec910a729c9ffbb852e6a4e1c8cf5189a3a032b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.link/pify?keyword=klaerwerk+tanoa+life'. Another heuristic indicated a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body is heavily obfuscated, but the presence of these links strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/pify?keyword=klaerwerk+tanoa+life In PDF document text
    • http://files.ennistymonarttrail.com/uploads/1/3/1/6/131606408/92c7137f.pdfIn PDF document text
    • http://files.lclutheran.org/uploads/1/3/2/7/132740291/suvudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/33929643746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/lajigutesufatid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/9682461124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/deaf_driver_communication_visor_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/pagol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/28046827229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/tesoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4467/files/tuximabipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/aviation_english_macmillan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4002/6273/files/add_crop_marks_to_online.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 2

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_off00003fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FB9 4708 bytes
SHA-256: c708c0d60db37f6d9460bd4d421d86c4256fd0fbf8c37cc02052832d92c4b401
font_01_sfnt_off00004fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE0 9784 bytes
SHA-256: ed4aced1c84cf4c2478e67e7712131bbb91852e55e7f6f3749161012e1725ae5

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