Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a02a994e307b4b7…

MALICIOUS

PDF

40.9 KB Created: 2020-08-20 14:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 227605bd65fbc11f6db5530102868e50 SHA-1: 59631952932ee8ebaea53b2701123c879cebf135 SHA-256: 4a02a994e307b4b7690754aaca9bec1c9e1d7469f6555abe37350e11d6bbdc6e
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, characteristic of a link farm or SEO poisoning attack. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to browser settings. The primary malicious URL, 'https://ttraff.cc/pify?keyword=chrome+android+block+cookies+from+specific+site', is designed to redirect users to potentially harmful content.

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=chrome+android+block+cookies+from+specific+site In PDF document text
    • http://pogefow.aspireinsurancegroup.com/uploads/1/3/0/7/130776131/bokuxake-detubuv.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/1/0436/1895/9523/files/48830584252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/arquitectura_renacentista_francesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/east_bay_purchase_agreement_addendum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/51291251985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/water_borne_diseases_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70474217151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/34586240522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5017/0530/files/xexubabosugapape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/70681658477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/importance_of_international_public_relations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0147/8300/files/88360383779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6907/files/a_level_physics_data_sheet_ocr.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 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_off00006095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6095 5504 bytes
SHA-256: ac56702e1996a41e25343b9271f5b3af2bb3a585bca474f072f49917e089e2d3
font_01_sfnt_off0000731c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731C 10400 bytes
SHA-256: c9e7015408389e447318c51644f38cb14d2046707152a37f90c497fabda2c1ea

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