Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1bd11c1a4ea0dd…

MALICIOUS

PDF

46.7 KB Created: 2020-07-30 10:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 168bf6a225fdfa7d0b1fac8ccd86436c SHA-1: 5e285c24bd9681ba6506c43373e70bc1169ae77f SHA-256: 2f1bd11c1a4ea0ddbb695e79664e7f73a88849040806b30efa3b96dfa32e70e6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One of these links, ttraff.cc, is identified as a malicious redirector. The document body is heavily obfuscated, but the presence of the link farm and the malicious redirector strongly suggest 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.cc/pify?keyword=aluminium+tig+welding+process+pdf In PDF document text
    • http://files.stlaurencenorthfield.org/uploads/1/3/1/4/131406717/wexab_kogotusisela.pdfIn PDF document text
    • http://files.outonalimbboutique.com/uploads/1/3/1/0/131070171/zaziraxeresule.pdfIn PDF document text
    • http://files.re-mortgagemyhouse.co.uk/uploads/1/3/1/4/131408017/5f8912acb788.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/1/0428/9835/8432/files/kepudanunakadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/famiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8846/2495/files/5976233705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/tidokisabeninidigubakepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/15990602089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/jilabutajasajilaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/88911250085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vipomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4558/files/jusikadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/nulobobejogozupetam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/6732908083.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 4

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_off000070f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F1 5228 bytes
SHA-256: 25d6ad79ce3e4fb64caf42741bb7afa0067e3cd7a37013a7f6edfd0fe9370505
font_01_sfnt_off000082af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AF 13948 bytes
SHA-256: 928809a2cacdfc34bc74908a0f82b5b5619a31a80402cceb697f2a3066523681

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