Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ba20b3b7726c40…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 19:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e082595a8174526d0c60e97f52ff0db2 SHA-1: b8e16662b800a79c263357c2572c99d524fe818c SHA-256: 44ba20b3b7726c408104552e67cce87834a85f727f06a8a733447d615a711a8d
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, and another noted a large external PDF link farm. The document body contains garbled text but includes the URL https://ttraff.ru/pify?keyword=marwadi+bhajan+video++song, which is likely the primary malicious destination.

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.ru/pify?keyword=marwadi+bhajan+video++song In PDF document text
    • http://files.tmoonphotography.com/uploads/1/3/0/8/130813079/lubegifo_lelak_jadurediw_bedogo.pdfIn PDF document text
    • http://ximegeb.annapike.co.uk/uploads/1/3/2/3/132302963/bibupij_ruzubi_vuxeximoxan.pdfIn PDF document text
    • http://files.americanhazelnut.co/uploads/1/3/1/4/131407148/c5534e3589cf31.pdfIn PDF document text
    • http://fajifutip.victoriazamora.net/uploads/1/3/2/3/132303382/2686826.pdfIn PDF document text
    • http://files.annbracken.com/uploads/1/3/1/6/131606668/mawedobibifowu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/imo_app_calling_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/86724506273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/puzzle_box_level_23_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/suvowobalijol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/kuvopivaleti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/rotadasipitute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/criminal_law_notes_kenya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5282/6773/files/20630990590.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56DA 5136 bytes
SHA-256: aaf281882bfab5fe4fe930e36f73f8b0b1411ca9d387e395fc78cce1c4516cb7
font_01_sfnt_off00006855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6855 9852 bytes
SHA-256: 6cd829fc81c41187e1a092a649c8558b40b60ec5522a2738a05e5aca28e3530a
font_02_sfnt_off00008a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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