Malicious PDF — malware analysis report

Static analysis result for SHA-256 65117e22b7ac1fc7…

MALICIOUS

PDF

49.2 KB Created: 2020-08-14 13:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccb9af861d54899d66aca550ae117332 SHA-1: c11a945e6920bfd7bafef2857d17c0aaf78958ae SHA-256: 65117e22b7ac1fc79d7d3dd6ed62c727068c634efbb11285faf5817a15c0c092
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise a phishing or malware distribution lure as a calendar download. The ML classifier also strongly indicated maliciousness.

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=kalender+2019+mit+feiertagen+baden+w%25C3%25BCrttemberg+pdf In PDF document text
    • http://files.carfagnocleaning.com/uploads/1/3/2/8/132813998/ed4af92f72.pdfIn PDF document text
    • http://files.foodbanknca.com/uploads/1/3/0/7/130775196/mubajox.pdfIn PDF document text
    • http://files.merraephotography.com/uploads/1/3/1/3/131380146/zugudofibosolos-lavovebevudoni-dedelatak.pdfIn PDF document text
    • http://files.saskiab.com/uploads/1/3/0/7/130740524/b5b8f0.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/1/0434/3028/1381/files/bsc_zoology_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/66327176047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3535/files/zonowurimobuvedeweki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/tizefogadejoxipeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/xivisawil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/mathematics_formula_for_bank_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4661/files/zatosudig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/32777220493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/wetewiwawefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/74252320543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/nemexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/wuvazebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/wofukoletuximowawem.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7252 5984 bytes
SHA-256: 7d0bbd32338fba0b96828725455a9206329ccc0aed50fa89d2bda8cdc1e45b3f
font_01_sfnt_off00008680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8680 15364 bytes
SHA-256: 2dd580416762517851b84036216a17be93efd1590d32c127a5aee58de97855fb

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