Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16104636ff682de…

MALICIOUS

PDF

46.6 KB Created: 2020-08-02 17:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49dc0417b831c108caed25f7f6ab169d SHA-1: c11007d335170dff6c677e2a1e9ccbbcb1370792 SHA-256: f16104636ff682dead13f3b3fe357e4fd4a27e09cee92ee38e0d6ebb941d52de
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with many pointing to a redirector service (ttraff.cc). This suggests a link farm or redirection strategy to obscure the ultimate destination of the malicious content. The presence of numerous PDF links, many hosted on cdn.shopify.com, indicates a potential attempt to leverage legitimate platforms for hosting or distributing malicious content. No scripts were extracted, and the document body is largely unreadable binary data, but the heuristic firings strongly indicate a malicious redirection scheme.

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=css+media+query In PDF document text
    • http://files.sovereign-gundogs.com/uploads/1/3/0/7/130740561/kitiwulopokiwu.pdfIn PDF document text
    • http://files.starplanappliances.com/uploads/1/3/1/6/131606672/bemotudisi_limurakeva_bufifidexi_bixazazunasixij.pdfIn PDF document text
    • http://files.rosieandtherivets.com/uploads/1/3/0/7/130775347/xajetaful.pdfIn PDF document text
    • http://files.allaboutpallets.com/uploads/1/3/2/6/132681901/xapavekolu.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/1/0431/2314/6909/files/15716201625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/kojimimatuladudikura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/fugoxowazapimuvosigow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/43478097864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/45944753823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/99822744235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/xitusirifipewenebozoxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/sufuten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4685/5078/files/xiwuwatebilekovogoviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.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 5

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_off0000782c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 5072 bytes
SHA-256: e1184e56af3311373ad8637c8688a111cdebc428d3b0c08ac10c456b1b4f99e9
font_01_sfnt_off00008951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8951 11412 bytes
SHA-256: 993cd3b3b21d868f8a97ecba991b1a1a8091dd7f677206f2905a6d5a6959f178

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