Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1520cf3e4fb4594…

MALICIOUS

PDF

38.8 KB Created: 2020-08-22 19:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7dc4beda1f94ee9ad64c5788363ee13 SHA-1: afc1c8eeffbf7a1cd38dbb1f8091af360bc0a939 SHA-256: d1520cf3e4fb45943361d3387bdd35b0b5cdad57827f8a372d771faba6fea3d1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body itself contains garbled text but includes the URL 'https://ttraff.cc/pify?keyword=folding+pocket+knife+template', which is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware delivery.

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=folding+pocket+knife+template In PDF document text
    • http://xuralo.38plus2productions.com/uploads/1/3/1/3/131398177/nejuwisugobad.pdfIn PDF document text
    • http://files.alleghenybuilders.com/uploads/1/3/0/9/130969830/godider.pdfIn PDF document text
    • http://files.eastcoastmassage.org/uploads/1/3/0/7/130776542/wefuwef.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/1/0428/8151/5673/files/lions_clubs_international_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/12340764095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/wonisaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/vedic_astrology_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/52345110049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4493/7628/files/fagikafafemobuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7175/files/99817777754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/9637594352.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 8

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_off000059ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CA 5220 bytes
SHA-256: 5eacbd8e1a7f6840eea4b8fcfffcfae73811ace3a144c152ac95918e3c69edf5
font_01_sfnt_off00006b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B83 10356 bytes
SHA-256: 18ac201336cebea88f8add6f06a0bf1f2a62abfdcac7c0d341729a6f46fe76af

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