Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9439a616bded43…

MALICIOUS

PDF

36.9 KB Created: 2020-08-22 03:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5845430a01d11a1c39240494b75b13f3 SHA-1: 269262dab877e7fd605db103091cdfe0e142cb3c SHA-256: fb9439a616bded4381d15b3d9ede38051fdbb764fb0fffb6f0b22624ece54912
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=excel+footer+sheet+number`. This indicates the document is designed to lure users to malicious infrastructure. The presence of a PDF link farm further supports a social engineering attack vector. No scripts were extracted from this sample.

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=excel+footer+sheet+number In PDF document text
    • http://files.abigailcrscott.com/uploads/1/3/0/7/130740573/zapafegix.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/1/0434/5557/8273/files/60940903899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/enseanza_sobre_el_bautismo_en_agua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4216/1319/files/kisaliteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/20948918804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/papigimiganerijidizuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/roxaxulutipafuroranetumat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/nonujogudafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/gijelorosevobixilodusot.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_off000052de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DE 5076 bytes
SHA-256: 1714a00e4317806d2faded5bec36e4babe8346cc0c2a19a024a1214386efb6b7
font_01_sfnt_off000063f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 10436 bytes
SHA-256: e9c7fb3cb54b2b8d99a6c30de76e8e22cf09f3f07eb817ea8fbb371b8ae9bb55

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