Malicious PDF — malware analysis report

Static analysis result for SHA-256 a31ea976640a2c28…

MALICIOUS

PDF

42.4 KB Created: 2020-08-09 01:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a7896a9566a4d546be098b3df1335d3 SHA-1: 0e2a1dbe951ffcebc25ab674d425d92bdb4d7db3 SHA-256: a31ea976640a2c2829b360176ddaf266c8f3a6d0d92144985ae9ac5f7403a7cc
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic identifying it as a link farm. The primary embedded URL, 'https://ttraff.com/pify?keyword=gym+workout+routine+for+beginners+pdf', is a known malicious redirector. The document body, though heavily obfuscated, contains text related to workout routines, suggesting a lure to entice users to click the malicious link. The presence of many Shopify-hosted PDF links indicates an attempt to blend malicious links with seemingly benign 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.com/pify?keyword=gym+workout+routine+for+beginners+pdf In PDF document text
    • http://files.socialarthaus.com/uploads/1/3/0/7/130776060/5373244.pdfIn PDF document text
    • http://files.jamiletheteacher.com/uploads/1/3/1/0/131070633/bccefa8bcd66e.pdfIn PDF document text
    • http://files.897788976207812023.com/uploads/1/3/2/6/132681891/netawapun-misewofeki-fozupelekijo.pdfIn PDF document text
    • http://files.lms-art.co.uk/uploads/1/3/0/9/130968967/logir_nomiwopokel_kutubom.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/1/0433/9941/3925/files/jafepevasadekikep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/nojogod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/15793409510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/bizitudutufuvev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/87603998257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/10672680252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/19372630621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/pixuzinamusogolizino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/itinerary_planner_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/nutomojepimutipaxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/95884081261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/fazip.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_off0000666c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5548 bytes
SHA-256: c4746785bd9a80b1b1722b8693e82596f1a7d534183a5b80eb83475a73888092
font_01_sfnt_off00007957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7957 10340 bytes
SHA-256: 564e01afe3f77e53b88b4ae7f3f33b235919669fd8e89dfdf250d4404ff24a6a

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