Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab6104784a8a3c3…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 23:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcbc4ff914e0ae27b4baa93622e0684e SHA-1: 0ed002acff3c5e351d7d4e403e0aa835f4c7b6e3 SHA-256: 6ab6104784a8a3c363b950255bfc6ba4479b05495d258333c1994811563ed1f0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to SEO-optimized PDF files hosted on Shopify, suggesting a link farm or content stuffing tactic. A primary link redirects through 'ttraff.cc' with a 'skype old version for windows' keyword, indicating a phishing lure for potentially unwanted software or malware. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm the presence of malicious redirector links and a link farm.

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=skype+old+version+for+windows In PDF document text
    • http://fofawo.brosmakingadifference.org/uploads/1/3/1/6/131606289/5560083.pdfIn PDF document text
    • http://files.dogfishneworleans.com/uploads/1/3/0/7/130739328/vodomusifenupeko.pdfIn PDF document text
    • http://files.ardemolition.com/uploads/1/3/0/7/130738779/gegevejarutoriv-darotepuvopen-ruvapil.pdfIn PDF document text
    • http://jitori.jeffersonequestrian.org/uploads/1/3/1/0/131070161/aff8bb.pdfIn PDF document text
    • http://files.benztransport.com/uploads/1/3/1/3/131379183/zufewawo.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/1/0437/1385/5643/files/budapest_travel_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/97176127641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/magoliwixiwube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/centella_asiatica_wound_healing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/39984638728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/3834224683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4258/2176/files/partitura_para_piano_hallelujah_shrek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/635874384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6802/files/magic_arena_download.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 3

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_off0000673b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673B 4952 bytes
SHA-256: 8e87f19e60f58001acd150e33b27030f22bac0e5a5bb17b02ae3786c86567da9
font_01_sfnt_off00007831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7831 10232 bytes
SHA-256: 3daac61b222ca8c87f881a12865754ff6ceff0abd8ebe9eb36b97445d42885b0
font_02_sfnt_off00009afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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