Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fda78358a625a55…

MALICIOUS

PDF

45.5 KB Created: 2020-08-09 08:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ec52b0f36afbfbbd3aa576049482728 SHA-1: 77ea5299e6587d3426d4edefd37437cffcb378db SHA-256: 5fda78358a625a5565b64d0532e75134c3b5a78db6683717a0f776b88c735502
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for users seeking project constitution examples. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or phish users.

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=acta+de+constitucion+del+proyecto+ejemplos+pdf In PDF document text
    • http://jewedo.tripletterriers.com/uploads/1/3/1/0/131070722/8952191.pdfIn PDF document text
    • http://files.anxietytherapysf.com/uploads/1/3/0/7/130739552/4003220.pdfIn PDF document text
    • http://files.sevenstarsamerica.org/uploads/1/3/0/8/130814633/8957423.pdfIn PDF document text
    • http://files.carolavedonsavage.com/uploads/1/3/0/7/130740217/dedigurat-kosemaguvijisa-nexomerutugupek.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/1/0432/9763/6512/files/fezosomuvapepuduvafakule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/synonyms_antonyms_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/71559723684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/numafaniri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/98303464805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/sewikusepojesob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6100/8791/files/window_grill_design_catalogue_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8988/7399/files/99285464416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/69445356646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/vonosanipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/56212527303.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_off00007058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7058 5468 bytes
SHA-256: 57fc32c10679df9901353333c79a2b7642cdaeafd2b69a0c0b362c005eb0da8a
font_01_sfnt_off000082ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EF 11904 bytes
SHA-256: 722bcab8b73bb7091f4ff527231c234851ad76b556cf9d6782391fa0d52e000b

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