Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb8d9a162b780a66…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 00:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 114539557a6567cc09f0ee80ee11e9c4 SHA-1: dfb973aecb0b349f1b2d91d43df4c67b817ed5f3 SHA-256: fb8d9a162b780a669e94050a6bcce2c0d107c60ab7398bb4928a066bc9511ee7
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 'https://ttraff.cc/pify?keyword=disciplinary+acas+guidelines'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the same malicious URL, suggesting the primary intent is to redirect users to potentially harmful 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.cc/pify?keyword=disciplinary+acas+guidelines In PDF document text
    • http://gexerij.lastellasalon.com/uploads/1/3/1/4/131454526/5289389.pdfIn PDF document text
    • http://files.ourplacestoremember.com/uploads/1/3/0/7/130740222/56995.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/1/0433/0687/7080/files/78299439052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5864/2595/files/tipur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/7229536331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7729/5521/files/free_aptitude_questions_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/biluxoninudekolafixata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/22012857055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3415/4907/files/kindle_file_format_convert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2155/6117/files/96847838932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5063/5162/files/video_downloadhelper_firefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6295/files/shabad_gurbani_bhai_ravinder_singh_ji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/bitutosabonejubapawatofuj.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 3

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_off000065e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 5340 bytes
SHA-256: a8c076bbe531570c467848804d52d28305a0b62d851956a986832fab888eaee9
font_01_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10816 bytes
SHA-256: c6e35044ac3dd208b5f2fc9a6761f288c8c3c1b8a92aee677960dd144c64e1da

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