Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bd79457b791c19…

MALICIOUS

PDF

51.7 KB Created: 2020-08-08 22:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7488888eba3f2257b8a88d6c28848513 SHA-1: 33326a2fea8046a48fc33f8c4b5db3ae58090809 SHA-256: d1bd79457b791c199706df035a7e2429d9d857f2cb15764c109a412cd7ac9cbf
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic firing indicates a direct link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary goal appears to be directing users to malicious infrastructure.

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=simethicone+davis+pdf In PDF document text
    • http://wunemerur.lavarsteelart.com/uploads/1/3/0/8/130873822/9819173.pdfIn PDF document text
    • http://files.lonestarnstra.org/uploads/1/3/0/8/130874458/530e8468bef9.pdfIn PDF document text
    • http://files.cecilyeiferle.com/uploads/1/3/0/7/130776850/somakiwino.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/1/0429/6795/7658/files/wufogediragegibotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/48720451450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/79710966100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/game_engine_architecture_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/43756925701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/jafovipusapesojejag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/kaxavujigunal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3442/7047/files/25476302929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/algorithms_to_live_by_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/wibifodikapulilokijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/gijitevatajesagiwiwaxi.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 6

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_off00008b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 5428 bytes
SHA-256: 26713af097fc98384554643c16df988c3a7d0f1b7d57143126b12ddc39fe271e
font_01_sfnt_off00009de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE3 10652 bytes
SHA-256: b4babb18d81369f33889f481e3aeb92713d9c21ed3326fff27d6a2983c5cffd4

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