Malicious PDF — malware analysis report

Static analysis result for SHA-256 441deedc7b2ff4c9…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 06:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bfb42deff277b45f0853e160806f6c5 SHA-1: 5766f27cf8787a85ea94286627f4adee4703951d SHA-256: 441deedc7b2ff4c9fce579ee1d5583f77a056924d218a15a9c5ffddcae1a5225
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=selenium+headless+chrome++file', which is a critical indicator. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic, potentially to distribute further malicious content.

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.com/pify?keyword=selenium+headless+chrome++file In PDF document text
    • http://files.yashbangera.com/uploads/1/3/0/7/130738625/83486b04a35.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/1/0430/7209/4362/files/85018209049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/basic_bookkeeping_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0394/0762/files/bipimiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/65173494749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/angiosome_concept.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/motogofir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0081/5006/files/73341392889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/the_brightest_stars._poar_zmysw_anna_todd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3481/8198/files/18268635831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/44017308747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/barbara_ann_brennan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4332/files/vuzulakaloparogefatiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/how_to_uninstall_parallels_on_mac.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_off00006b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5364 bytes
SHA-256: eed0a9e484533f48d9c61eb00c744fb33bfe47a082a7dbd40235735a1ab589f0
font_01_sfnt_off00007d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6E 11340 bytes
SHA-256: 89a22bbe5899f86948c298a7e811bb54ba1d309a1d4a0c8427c07a7734ebd3c1

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