Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ff7312fd36f7fc…

MALICIOUS

PDF

40.5 KB Created: 2020-08-08 10:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 363eda7d9ff7cf9c6c59e93196db57d0 SHA-1: 0e6cbc67faa5b7312644482c24232a098f387495 SHA-256: f6ff7312fd36f7fcdc4ae881a83bcdfeef2a8dcdcb34aa1ac13e4d2362250a3a
194 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains, but one critical link to 'ttraff.cc' is identified as a malicious redirector. The document body, though partially corrupted, contains text related to financial mathematics and the URL that triggered the malicious redirector heuristic. This suggests a social engineering attempt to lure users to a malicious site under the guise of providing financial documents.

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=anualidades+anticipadas+matem%25C3%25A1ticas+financieras+pdf In PDF document text
    • http://files.marvinsflyingdisccollection.com/uploads/1/3/1/3/131384025/330545.pdfIn PDF document text
    • http://files.highdene.com/uploads/1/3/1/4/131453818/lusezuvexudebo_ronalaz.pdfIn PDF document text
    • http://files.aahandcrafted.com/uploads/1/3/1/8/131857152/4002979.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/1/0431/5545/6149/files/pdf_to_ngpdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/self_appraisal_answers_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/tugeravipugerina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/wejifogodab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/66622320333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52945462890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/66451933413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/11207135101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/27537441421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/jisosidiket.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3D 5524 bytes
SHA-256: 1ccd5a7a84e05349c38de4510ef02bb168f2dd81ac36aad86a3e3d0163cbdb81
font_01_sfnt_off00006d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C 11496 bytes
SHA-256: de9dd8e5ea332ed5209ea334830dd60c86e918b12ebce66bd19afc5a60478dc8

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