Malicious PDF — malware analysis report

Static analysis result for SHA-256 8118889514d2a307…

MALICIOUS

PDF

37.9 KB Created: 2020-08-16 20:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de1712da2505ee68ee19f52c356fb93f SHA-1: ecf5d44e7f0b007d45d24e17003cc0a2d0c8df08 SHA-256: 8118889514d2a307cfc8fde1c2c765928920d0b3fdd48e1793de0549025514c3
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains. One critical heuristic indicates these links are part of a malicious redirector infrastructure, specifically pointing to 'ttraff.cc'. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the primary attack pattern involves luring users to malicious sites via a link farm.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=background+bokeh++free In PDF document text
    • http://files.actservices.net/uploads/1/3/2/8/132814768/7863281.pdfIn PDF document text
    • http://vavuwe.consuelojunderwood.com/uploads/1/3/1/6/131607131/fanodokavepana-vafojikafesok-pitajil.pdfIn PDF document text
    • http://pisagonu.mission1040.com/uploads/1/3/1/3/131380284/vatagavoxa_julog_kitepeginufo_radoliz.pdfIn PDF document text
    • http://zisum.holtonhomeplace.com/uploads/1/3/0/7/130776485/4d039d44a661e97.pdfIn PDF document text
    • http://xesabomu.athensupc.com/uploads/1/3/1/1/131164250/49ddd555f81.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/1/0431/7141/4173/files/sexesimevigumegik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/85003630550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8669/9925/files/nubosoxovokujesuzovaxara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/84979559976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5225/files/financial_audit_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8722/3198/files/73537416946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9079/files/guvorazazazewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/bofewowafivatutakefijeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/automobile_engineering_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/ccna_study_guide.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 4

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_off00005a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A58 5324 bytes
SHA-256: bb796d52085790899df0beeb08fdf63ffed476a56672247cf126a30f0df9d779
font_01_sfnt_off00006c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6D 8988 bytes
SHA-256: 77e2c220f4adb55b4c17ad330d44fab4de5156afaab6c1022c7de004cad6427a

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