Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c3a30234f36d01…

MALICIOUS

PDF

38.3 KB Created: 2020-08-17 17:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4da037603d7eeb024206ca0a3933c9a0 SHA-1: 4fd3f5e622293e7358027d433be0b57e02096936 SHA-256: 83c3a30234f36d014a912e28b6036047d1fc96442c8dff675399e274e0f4ac5f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.cc/pify?keyword=source+sans+pro++dafont. This technique is often used to obscure the final malicious destination and is indicative of a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=source+sans+pro++dafont In PDF document text
    • http://files.lindsay-hamilton.com/uploads/1/3/1/4/131408899/visagemoram-dagogamawe-gumejosujejok.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/1/0433/6241/8846/files/45355441385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/68805915080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/famanodewitivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/24805185579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/18096231407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7766/2875/files/57255773500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/34375058467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7154/5237/files/sefigafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/important_current_affairs_of_september_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/fepojizo.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 6

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_off0000561f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561F 5220 bytes
SHA-256: 9f5a1f950525f0fe15b4befb58fbae1a6e9a4f855891254e2e2ebe89084e914b
font_01_sfnt_off000067e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E3 11388 bytes
SHA-256: 160831ba9090ec258bdca14cdd967acce873348f140ce9d7d3cbff4fbfb08e47

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