Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab2b72ca45ded40…

MALICIOUS

PDF

54.8 KB Created: 2020-08-12 02:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4f577d9c63cab2cef5c6b25a5b6c1d1 SHA-1: 4b52bf13a8c8a4121d3b47a41f469998faeb259c SHA-256: 1ab2b72ca45ded402a9687f1d600556bcb073f7234abe26b2fd88283e91b5935
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though partially corrupted, contains the same URL and a title suggesting a lure for a technical document. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The primary malicious URL is used to redirect users, likely to a phishing or malware distribution site.

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=beginners+guide+to+solidworks+2020+level+1+pdf In PDF document text
    • http://jeraso.naturparkmaribo.dk/uploads/1/3/0/7/130775403/872d6f5a5793e0.pdfIn PDF document text
    • http://peranali.njaje.org/uploads/1/3/0/8/130814328/f354bce3f.pdfIn PDF document text
    • http://files.theparksphysie.com/uploads/1/3/2/6/132681156/loteniluva.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/1/0431/1734/6965/files/97924031526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/quantitative_aptitude_topics_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/41075338252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/29608070504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4003/8302/files/73917617698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/58380107676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7735/files/annual_report_sample_of_a_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/guxufidifimugiruvifabaxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/59017701626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0548/0858/files/12801476105.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_off00009750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9750 5588 bytes
SHA-256: b747a42fd8742507897f5957e7146cb435ed5601cdc410538bf03a3814faaea1
font_01_sfnt_off0000aa91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA91 10340 bytes
SHA-256: b03d217aba0cd65ef9c52c66f2349411cd004af7846b09ecab159e5a4e2b974b

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