Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4a48e89d7ec0c5…

MALICIOUS

PDF

52.0 KB Created: 2020-08-04 14:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 429f2cd7b6e6b1ab8c0f954570beb01b SHA-1: 3850831be42c1019bbb4e22c4edb3e421b0b6c45 SHA-256: 5b4a48e89d7ec0c536cf1e1a500e0b4fb7143840e486cea3175d356c4dbda175
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDFs, many of which are hosted on domains designed for SEO spam. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious content. The document body itself contains obfuscated text and URLs, further supporting the malicious intent.

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=customary+law+in+south+africa+pdf In PDF document text
    • http://files.bookcellarlwonline.com/uploads/1/3/1/8/131860787/xejapami.pdfIn PDF document text
    • http://files.tutystenac.com/uploads/1/3/0/7/130775154/wujagejopamo.pdfIn PDF document text
    • http://files.amjetaviation.com/uploads/1/3/0/9/130969522/f9b231.pdfIn PDF document text
    • http://files.sailongrain.com/uploads/1/3/0/8/130874554/xaxixabupuwas_xagosokuji_sowujisem_kidexuwene.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/1/0433/0687/7080/files/16779745642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/buxalulizevudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/adiemus_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/juramuxuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/kovidafolozenuliligisivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/5120621141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/16287482521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/fenekavoxobunijozenerub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0796/files/law_of_conservation_of_momentum_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/genibupaxowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/9318207832.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_off00008cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEA 5492 bytes
SHA-256: e78fedec94399ba74218da8ccf50fc2de7843607cfa98b9492df72a90e8f38f0
font_01_sfnt_off00009f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7F 10380 bytes
SHA-256: 06c1a8aa57905c599b3f796a202d12a8fe68f93ac3726d101421bdb55cd7cb51

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