Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e01d4ae6ed387c8…

MALICIOUS

PDF

38.2 KB Created: 2020-08-21 21:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1588f2da0fea767c70a6bbede44548c5 SHA-1: 6d1e0c5da683224af48238160dbebfc56f2c393f SHA-256: 4e01d4ae6ed387c89d80d7d13760f4ede166f0a45b0d88b57518fdc7dbff4c3d
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=atlas+of+avian+diseases+pdf'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm tactic to obscure the primary malicious destination.

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=atlas+of+avian+diseases+pdf In PDF document text
    • http://files.winniegivot.com/uploads/1/3/1/3/131398099/1777f5d54228.pdfIn PDF document text
    • http://naxizijeb.fireprotect.me.uk/uploads/1/3/0/8/130814328/702623.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/1/0431/0623/8613/files/dragon_quest_2_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/advanced_muscle_building_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/tozibozazefimuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/23157029572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4135/7973/files/17482307245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/pelikiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/nakigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/bible_verses_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/lol_pbe_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/fojatajopivakuzikobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonexosorovofevovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/segojavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/dajiti.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 3

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_off000051c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C3 4988 bytes
SHA-256: b6053862f8a20377720dad7d0e2a007db1ed32f02ccca3f2c5ccb1b08728e312
font_01_sfnt_off000062d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 13224 bytes
SHA-256: 450154039a05d76c1586b1599ac5dcc02cccf6881aef001ed3c3e8c238fddf94

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