Malicious PDF — malware analysis report

Static analysis result for SHA-256 22da7b2ca07846a2…

MALICIOUS

PDF

42.6 KB Created: 2020-08-06 21:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5491379117706ebfccfa64631cc71eab SHA-1: b43967e31603d775ce20438c292888bb1f3644d3 SHA-256: 22da7b2ca07846a2fab302629fb37cfa5c72fdc35a0644c291fb7df72fc318a2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, https://ttraff.ru/, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and the shopify links, suggesting a lure to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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/wb?keyword=most%20common%20english%20words%20with%20arabic%20translation%20pdf In PDF document text
    • http://files.michellexiao.net/uploads/1/3/1/6/131607346/xugex-xotosuzunixovir-kuvareduxifo-fufetatarifu.pdfIn PDF document text
    • http://files.changingfutures.org.uk/uploads/1/3/1/6/131606087/mufegesitawiko-matuwomap-xivekun-vokozufeletefuz.pdfIn PDF document text
    • http://files.townofeileen.org/uploads/1/3/0/9/130969960/toludajajam_dufaja_miwibedub.pdfIn PDF document text
    • http://files.hopeandhealtherapy.com/uploads/1/3/1/1/131163617/f337c30758a39.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/1/0437/4138/0762/files/sijibobobasawowanepepukan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4659/8821/files/pisogulivowurakon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/kukofopowefav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6641/5514/files/tugogitaduwotisaxuvuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/dapinoxekuzikefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/rijag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/bivariate_lognormal_distribution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/the_dapper_prodigy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5169/1680/files/halo_2_gravemind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/dagerizuzojavigejorip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/bozuxawowumi.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_off00006636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 5804 bytes
SHA-256: 711dce722fecb03273655ca205ab1c3f49b62754209d92947848b335bfc7ada8
font_01_sfnt_off000079e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E5 10328 bytes
SHA-256: 88fbb482f9af0ee0e1323981561168d0d289a5846015120dc9240426544379a5

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