Malicious PDF — malware analysis report

Static analysis result for SHA-256 6def74cb66f04eea…

MALICIOUS

PDF

60.8 KB Created: 2020-08-04 19:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e27e74284e5c34bae63838d1e70336f SHA-1: fd1fefbd66f5e652142e98f06886e74471f48a10 SHA-256: 6def74cb66f04eead1a192d0fb15eb55a5b668edb16170339945043799c52604
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed to deceive users. The primary malicious URL, https://ttraff.ru/pify?keyword=eudralex+volume+4+annex+15+pdf, is identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting it's the intended lure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=eudralex+volume+4+annex+15+pdf In PDF document text
    • http://files.jnrbuilding.com/uploads/1/3/1/4/131407178/bezekezel_tazamaximul_paxibip_nadog.pdfIn PDF document text
    • http://files.mysanelife.com/uploads/1/3/0/9/130969993/3309755.pdfIn PDF document text
    • http://files.kennyfedorko.com/uploads/1/3/1/4/131406885/fugipimu.pdfIn PDF document text
    • http://files.goldenreiki.co.nz/uploads/1/3/2/7/132741155/36d813.pdfIn PDF document text
    • http://files.suviperformance.com/uploads/1/3/0/7/130775373/7497118.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/1/0431/7220/0605/files/sojirosoleneneva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/analytical_and_synthetic_method_of_teaching_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3318/files/55597456088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/16258361499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/kutokikerenilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2017/9864/files/defopuvidegetegaxofago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5126/0823/files/godenodegeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/skyrim_special_edition_sex_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/the_first_48_season_16.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/57115082554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1248/8348/files/biomass_energy_resources.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/wuxit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF4 5112 bytes
SHA-256: b155f6453ddd318483f1630060d7a3dc4f80f7e885a59acc0d6cfe3f3276a9c4
font_01_sfnt_off00009f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4A 10124 bytes
SHA-256: 819121b490f6ba6974b26a16cd1d17ece523032903ce83414d9b53447094bae0
font_02_sfnt_off0000c1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F5 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off0000d725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34