Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0fcc9dd85243b6…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 13:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae309e5fb7314a611a960dc687ca6f15 SHA-1: 69f00740855bccac4fe87e77fdea3e25b66616b5 SHA-256: 7c0fcc9dd85243b6de080a8d5998f5e00c36e840b249ed42c7bd9fe69a776c20
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and link farming, specifically pointing to the URL 'https://ttraff.com/pify?keyword=gravitational+force+and+field+worksheet'. This URL is presented as a worksheet download but acts as a redirector to malicious infrastructure. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting an attempt to create a link farm for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=gravitational+force+and+field+worksheet In PDF document text
    • http://files.silverjinnstudios.com/uploads/1/3/1/3/131381003/4268570.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/arduino_uno_r3_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/printable_paper_house_craft_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/bavogakanazokilonif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/buxuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3955/9573/files/muwakobimevamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/91077284378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3337/5399/files/bazezilajijivaxomepilus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/novela_aura_carlos_fuentes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/38778641917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/80817547262.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000586b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586B 5144 bytes
SHA-256: b3e3d1a88fdc18c7e32a135b680bd9282a399e0189efa3331e70ab12390f2b83
font_01_sfnt_off000069fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 10284 bytes
SHA-256: dd62fff73ba48bbc86d10de4673d2673b7fb8aac11eb60b3c2be575e4750982a
font_02_sfnt_off00008d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D23 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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