Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c9b3c52339f0b0…

MALICIOUS

PDF

46.2 KB Created: 2020-08-20 02:39:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49c247a491038ec21163cb8d0ea2bbc0 SHA-1: a1c001e8be4b35fba38573eb018dbcc22d7aaff5 SHA-256: 55c9b3c52339f0b00eb5a8151da572d42f3e097d33c1ed6249cefdedc18f789f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.cc/pify?keyword=guia+aprender+frances+pdf. The document body, though heavily obfuscated, contains references to the French learning guide lure and the redirector URL, reinforcing the social engineering aspect. The presence of numerous benign-looking Shopify links suggests an attempt to camouflage the malicious redirector within a larger 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=guia+aprender+frances+pdf In PDF document text
    • http://files.seedsofagape.com/uploads/1/3/0/9/130969293/xofab_tixagut_gidekagoz.pdfIn PDF document text
    • http://bokowizo.marketmenz.co.nz/uploads/1/3/1/0/131070500/xumumolowalab.pdfIn PDF document text
    • http://kanixop.megaplot.org/uploads/1/3/1/6/131606490/tavuzizutewelani.pdfIn PDF document text
    • http://files.amsetcen.com/uploads/1/3/0/9/130969061/jevijizunol-junapavamego.pdfIn PDF document text
    • http://files.slameventproduction.com/uploads/1/3/1/4/131483098/vutamolosog.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/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/78114741253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/case_580_super_k_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4950/0328/files/91442703364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dejozetopugewafapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7741/8651/files/capgemini_etl_testing_interview_questions_and_answers_for_experienced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/lagovobetonewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/52940321594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/32933612100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/9083270529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/72368301601.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_off000076d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D4 5148 bytes
SHA-256: 50fdd8f02dfcdcc51f2ef7b2e877fecc4b692915124797b9266188ad35a2b843
font_01_sfnt_off00008868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8868 10468 bytes
SHA-256: ab764ee6279f18040283cb4b77959289628d650fda6846951afc1a8c01d41304

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