Malicious PDF — malware analysis report

Static analysis result for SHA-256 776760f7750e9680…

MALICIOUS

PDF

47.1 KB Created: 2020-08-21 23:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f6fb78bfe238be62df89ee3d5685388 SHA-1: 879a8c39c0ad0371db201f5465879f92f49dbc4d SHA-256: 776760f7750e968063c9a16cf7c1da24bc8e53e04dc53453a931d9221bc1e1ea
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, suggests a lure related to 'psychosocial risk prevention' which is likely a pretext to encourage users to click the malicious links. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL supports a phishing or scam attempt.

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=riesgo+psicosocial+definici%25C3%25B3n+formas+de+prevenci%25C3%25B3n In PDF document text
    • http://bozajapu.lovelylemonco.com/uploads/1/3/0/8/130874330/7709441.pdfIn PDF document text
    • http://jinuzo.kristenmeeceart.com/uploads/1/3/0/7/130775162/c08fcd.pdfIn PDF document text
    • http://sasuw.soleilfb.com/uploads/1/3/1/6/131606620/puliri.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/1/0428/9835/8432/files/mojarugalemidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9551/3505/files/61131988924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/kepidefuziroronomof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/gazulilokevenidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4340/files/python_3._6._0_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6571/files/pathfinder_mythic_realms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6903/6958/files/9200940188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2293/2373/files/template_for_architecture_portfolio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4518/2888/files/european_certificate_of_conformity_car.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3910/8770/files/93636361590.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 4

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_off00006719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6719 5384 bytes
SHA-256: 4c3ed1bedaf654ab2d5b81273a4b9bf4dd6449e2dc082a5852248330de98e984
font_01_sfnt_off0000790c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790C 11516 bytes
SHA-256: 3806f71a335b8081b99072761957e22a325ed7a78bdda7eaf44353bb21668916
font_02_sfnt_off00009e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E78 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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