Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a873c68ffa386c…

MALICIOUS

PDF

56.2 KB Created: 2020-08-24 13:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d4499dc95174a715c81260d0bb2a017 SHA-1: 951a89c8a907babbb392c7950d286e85694dc55d SHA-256: 83a873c68ffa386c770f9303e721f088b91c49afac35ba95e4d42829ea1fd928
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing towards a phishing or scam attempt. The embedded URL 'https://ttraff.com/pify?keyword=bangla+bhakti+video+song+free' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure.

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.com/pify?keyword=bangla+bhakti+video+song+free In PDF document text
    • http://files.galitfriedlander.com/uploads/1/3/0/7/130775679/5491836.pdfIn PDF document text
    • http://files.alexandergalant.com/uploads/1/3/0/7/130738991/8bc1cd8d89.pdfIn PDF document text
    • http://files.clarkparkway.com/uploads/1/3/0/7/130776755/pinegojek_sitekif.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/1/0435/6803/8049/files/96783129963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/65206966797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0157/files/bhagwan_dada_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7750/1095/files/nokarisizafogafegoran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/flower_structure_and_reproduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/manual_sencico_autocad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/rivofujazixukirupokugida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/5602078232.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 6

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_off000096b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B3 5480 bytes
SHA-256: 5f94774ca0f35e2cbc06985acdc81317481b24ff0558c02438e2c8f304ea58ed
font_01_sfnt_off0000a94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA94E 13816 bytes
SHA-256: ceb78839add3dd9f71420e334c63efb329a9cbad3537b0b9a3b277d990389cdf

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