Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fed48fa54fa014…

MALICIOUS

PDF

118.9 KB Created: 2020-08-14 07:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ccc2a516557fe44e078a8b01f0c7ace SHA-1: 061e650a5595d1d9d92a423743a5724efa8f5a3e SHA-256: 43fed48fa54fa014d71e2d972d91d7bb03071ea44f7417151873cf55b5144cb3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of a PDF link farm heuristic suggests this document is part of a larger SEO-based distribution scheme.

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=lucian+guide+season+10 In PDF document text
    • http://files.photosophy.co.uk/uploads/1/3/0/7/130775870/taxubodapu.pdfIn PDF document text
    • http://files.surprisescorpionsaz.com/uploads/1/3/2/7/132740930/466699.pdfIn PDF document text
    • http://files.pkpressurekleeninc.com/uploads/1/3/1/4/131455475/283639.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/1/0437/1510/0826/files/osteoporosis_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xanixiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/notarupadifiwunuxatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/big-_ip_edge_client.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/annual_report_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/banting_orange_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/dipozonuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6970/1280/files/doxinoxaxojapeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/renukofakegavoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8432/0661/files/mumadurixubuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/dejex.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
🗂 Part of campaign: pkpressurekleeninc.com 6 samples

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_off00019877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19877 5112 bytes
SHA-256: db8b7c2a8bd5860968e659b53dda873d50010cf4e0fe23bf3cc1c475f197b84f
font_01_sfnt_off0001a9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9F1 10740 bytes
SHA-256: f4589649f5ac9ac09f60182ac37b61ff851df6356f7dedcf9c798edb195fd35c

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