Malicious PDF — malware analysis report

Static analysis result for SHA-256 13221cf1d0066c82…

MALICIOUS

PDF

44.4 KB Created: 2020-08-15 07:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca2516f8aaeadce88b7c588637c4bd08 SHA-1: 52cb0ec24505bc7a8e8bbcf2d4755ec8fce1ce57 SHA-256: 13221cf1d0066c82d5edaf162faad924bc61ae7f2496419f809179912f6d8984
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract traffic. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is also present in the document body. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=australian+cadets+uniform In PDF document text
    • http://files.soundwavescape.com/uploads/1/3/0/9/130970008/b335b.pdfIn PDF document text
    • http://files.embrandon.com/uploads/1/3/1/0/131070845/nosenuzesaba.pdfIn PDF document text
    • http://files.andrewanddeannafriesen.org/uploads/1/3/0/8/130813510/losamafapo_doxedowoporumi.pdfIn PDF document text
    • http://files.roanmountainglass.com/uploads/1/3/0/8/130874559/wujetenepukopez-pefovupesepitag-pokimaput.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/1/0434/7923/6773/files/62787749984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/todomutogubawajejafolexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/60745707660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/ruxusegelawetefebut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/sajetirajiruzefuxupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/60743267040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/building_data_pipelines_with_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7186/3961/files/los_angeles_sightseeing_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/lomekusepitefabuwote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/36604602906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.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_off000071eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EB 5156 bytes
SHA-256: e7270864ed37e2415e92baf07ad2c640bed9c2a04a43e7693c896e4bf8c6ad54
font_01_sfnt_off00008350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8350 9880 bytes
SHA-256: 44ab975f0afe253b4982a4ba41f5fcb17361303adfd2d5de55dc4a56f4f4c495

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