Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79a264c295a55bd…

MALICIOUS

PDF

43.6 KB Created: 2020-08-24 11:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfd4ac7db199b86b57a0c02263071512 SHA-1: 9240b8df34811b00eec5c18d7adc15f2e2b0f9a0 SHA-256: a79a264c295a55bdb1e5f3ed02e5e1838875a49d6a517a494394014d01184e60
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn leads to a link farm of other PDFs. This suggests a phishing or scam attempt using a lure of a 'guide' to drive traffic to malicious infrastructure.

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=wow+classic+alchemy+leveling+guide+alliance In PDF document text
    • http://files.gncpw.com/uploads/1/3/0/8/130874361/jepogigirevurixanepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/62603003545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/3060794579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4349/9677/files/auckland_downtown_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/john_sarno_mindbody_prescription.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1109/files/bioenergetics_nicholls_ferguson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5696/3479/files/94808413821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/kumejilewide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/93712909028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/61779146532.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 5324 bytes
SHA-256: 630a2b269dc2a522ae59dff2da672dc14f227f20216e57aa37b84c0fd6e27062
font_01_sfnt_off00007130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7130 10164 bytes
SHA-256: ce47799bc6c0a84c94574cb374eda9cd179dbc54b6ea63ff98a793bac651e601
font_02_sfnt_off000093e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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