Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a287a4ec416c8ae…

MALICIOUS

PDF

49.5 KB Created: 2020-08-06 06:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af5646d5710d58f359399cb6077e71da SHA-1: e38154e8eee7fed85021c5cfdab6089afa918f53 SHA-256: 0a287a4ec416c8aed391c53337378ea09b18529d39f6eb6149e9094861d752f2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though obfuscated, contains references to the redirector URL and other PDF files hosted on various domains, suggesting a link farm or phishing lure. 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.cc/pify?keyword=bishnu+prasad+rabha+pdf In PDF document text
    • http://files.sistersofhope.us/uploads/1/3/1/4/131406558/vafogigibover.pdfIn PDF document text
    • http://files.karolinabohn.com/uploads/1/3/2/7/132712000/lixovuxakof.pdfIn PDF document text
    • http://biluw.diamonddashmealprep.com/uploads/1/3/1/3/131398091/d1b30a38cf01610.pdfIn PDF document text
    • http://files.activefittraining.com/uploads/1/3/0/8/130814216/fe75e5f5a.pdfIn PDF document text
    • http://files.balletvermont.org/uploads/1/3/1/6/131606367/4143c06ce88bd.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/1/0435/9664/4511/files/43134112338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/megirogifopav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6753/0655/files/solving_linear_equations_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/78954893145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/dolumavafezox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/how_to_mine_cobalt_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/21906542152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9547/2794/files/anthem_ayn_rand_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/rigiwutatafezetopaxajuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/investment_valuation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/93610952657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/wowavadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/4864213437.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 8

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_off0000854c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 5288 bytes
SHA-256: a3e60a5f4a84b0ec4672415d55502d8f40c50eb3d29732ce6adae1bfe5a4b4c6
font_01_sfnt_off00009736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9736 9968 bytes
SHA-256: ba89daa40f15e02f9c8c25e382cb053ec1ac7b8f3be6620db39e59bca1b29f7a

Open this report in the interactive analyzer, or submit your own file for analysis.