Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31186a7df8c0c75…

MALICIOUS

PDF

43.7 KB Created: 2020-08-08 14:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54266b437086ba2574f981e838b36f3f SHA-1: 31edb193b4b0e8949abb1582a7a9bf5fb9e241f3 SHA-256: c31186a7df8c0c75fe0f876e5e22129a29c5b0599763058f092b791f7f218b29
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the text 'Fever temperature chart pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=fever+temperature+chart+pdf In PDF document text
    • http://files.barkncat.com/uploads/1/3/1/1/131164351/rejikupoxegamuke.pdfIn PDF document text
    • http://files.brickitalia.com/uploads/1/3/1/6/131606822/nobenoju.pdfIn PDF document text
    • http://files.latitudegeography.org/uploads/1/3/0/7/130738764/206321.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/1/0427/5660/4070/files/setuzirevivekagevev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/sazodixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/still_already_yet_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/zutonivixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/modnie_strizki_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/29286271023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/cambio_climatico_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/wotogexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/61060713626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/comite_de_basilea_1.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_off000065e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E9 5200 bytes
SHA-256: 09f6b730157186336b431827f587c9b854c103646b1e51e1a8d8f0a36974cf45
font_01_sfnt_off00007778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7778 13416 bytes
SHA-256: cf10e431ceb937f2749b0800847e0374b65ed85672f59d9b5f17bf430f749144

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