Malicious PDF — malware analysis report

Static analysis result for SHA-256 78bc6755fb750589…

MALICIOUS

PDF

44.1 KB Created: 2020-08-12 11:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 571480b22feee60466bfec34985b56bd SHA-1: e5c67e7189e3a4d4ed4a292a9bce2e56acdbe810 SHA-256: 78bc6755fb7505891b9603e311a4dd978f4429f3fe60b267c01b09f9ac9317ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, including a known malicious redirector at 'https://ttraff.ru/pify?keyword=sample+career+aspirations+statement+pdf'. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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=sample+career+aspirations+statement+pdf In PDF document text
    • http://files.rtkilgore.com/uploads/1/3/0/7/130739742/8c21ae6a5.pdfIn PDF document text
    • http://matix.quentinguitar.com/uploads/1/3/0/7/130738546/zovuka-zaxage-zoxojivim-xiwus.pdfIn PDF document text
    • http://xipipatap.ricrna.com/uploads/1/3/0/7/130775934/ridiror.pdfIn PDF document text
    • http://nopinu.thamesapbioloy.com/uploads/1/3/1/1/131163725/refenuluxonufexusepo.pdfIn PDF document text
    • http://files.undisputedboxing.ca/uploads/1/3/1/4/131454304/ea91b4b82f45ba.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/1/0429/2935/6959/files/21139062024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8595/4208/files/12737332645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6024/files/que_es_una_galaxia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/wutiboxobirigazagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/causes_of_increased_intracranial_pressure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/months_of_the_year_in_french_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/78245452930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7323/6131/files/distal_bicep_tendonitis_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/losegexexifuzazasav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7996/1495/files/mathematical_statistics_with_resampling_and_r_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/jebipajifibe.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 7

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_off00006e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E16 5404 bytes
SHA-256: 900eb8d039840c817c592ae7279d2ec3a0ab945f93d8625e2c83af85650304f2
font_01_sfnt_off00008056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8056 10348 bytes
SHA-256: 0a82b8d5d0e695ad1a22dd63ac91264e4d3af2fae0909e681ce4eb30399ad8fc

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