Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79f49989a6850a7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-28 10:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 581e54338f8a3775350d42cbbc352383 SHA-1: 19ec1e8e75d9b342ac526af7aa5438793fb66971 SHA-256: a79f49989a6850a789afb77ce59f4d09a5b5ca7445224b7cd83c280f30cd8ef9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same title as the malicious redirector URL, suggesting a lure. The presence of a link farm indicates an attempt to distribute malicious content or phishing pages.

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=dil+hai+tumhara+movie+mp3+song+webmu In PDF document text
    • http://bawes.lakesidepre-school.com/uploads/1/3/1/4/131483334/dunamopizovofis.pdfIn PDF document text
    • http://files.christianfellowshipgoldriver.com/uploads/1/3/2/7/132740361/mawiwilamolob_wuwulowolelumen.pdfIn PDF document text
    • http://deteninip.drylandag.org/uploads/1/3/2/6/132696067/fdba5b643ff.pdfIn PDF document text
    • http://files.chapelbythelake.net/uploads/1/3/2/6/132695493/feliju.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/1/0435/6092/7393/files/spongiform_encephalopathy_define.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/marketing_plan_calendar_excel_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/30393783269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/dizuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/71001521353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/maytag_4000_series_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5870/4034/files/aradhana_movie_utorrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/best_android_spelling_test_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/bodubenub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/atos_administrativos_para_concursos.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_off00006ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5688 bytes
SHA-256: c491defd57f136453a8cc7380234e1ddba291a46163a801b571ca7d670f78dc7
font_01_sfnt_off00008222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 10028 bytes
SHA-256: ada45d84561f1f6c8cb106c1318571cd75ee2f3569055a048e1f9dc1f04dc48a

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