Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a64943db8eb048…

MALICIOUS

PDF

48.9 KB Created: 2020-08-07 07:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c70c2c5f94f11b93b4533caf2b1c6ab8 SHA-1: 3db770ab41b29ce4d15268907964f6990253af48 SHA-256: f9a64943db8eb048ebfffab5e70b9840483c2e3c8acbdbba7fa7f3d1195cf266
194 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, with a significant number of embedded URLs. The primary URL, https://ttraff.ru/pify?keyword=que+son+los+riesgos+psicosociales+en+el+trabajo+pdf, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to lure users to malicious websites, likely for phishing or malware distribution.

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.ru/pify?keyword=que+son+los+riesgos+psicosociales+en+el+trabajo+pdf In PDF document text
    • http://jadigewe.pamelaplattstudio.com/uploads/1/3/1/4/131452821/1233199.pdfIn PDF document text
    • http://files.gcklink.org/uploads/1/3/1/4/131453969/xizinidutesaxatatale.pdfIn PDF document text
    • http://files.forasplitsecond.com/uploads/1/3/1/3/131398125/9125676.pdfIn PDF document text
    • http://files.focusedlearningsolutions.com/uploads/1/3/1/6/131636990/49d8e9.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/1/0432/2341/6987/files/masipapewobalerojaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/lafigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8887/9521/files/despacito_piano_sheet_music_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/xaribuzomuxemorigotim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/gefesozajeparelezeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4629/5959/files/mgi_bill_kicker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/xupemujukujedideralax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/3_ball_mty_intentalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/national_skill_development_mission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/40089070107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/fumamidapazisenoled.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_off00007f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F33 5600 bytes
SHA-256: cb626f8ff5043e21c115ba24e8b00242f9686d400262adebf72cbfa6add2b3ca
font_01_sfnt_off00009247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9247 11064 bytes
SHA-256: 089341419ec0ddccbcb59eb02e10861ebf557e85d6d8b5dc691291d5ddad72d0

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