Malicious PDF — malware analysis report

Static analysis result for SHA-256 b97a3810a12e689e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-15 05:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f9e8451bd9321ab4edd36568acdeadb SHA-1: 25f9098f62837860592370b012e36e15a0b613bd SHA-256: b97a3810a12e689ef467e23106718207e9989ca97ee8bc00f2a419eda0b3954b
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 or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body itself is heavily obfuscated but contains references to the redirector URL and other PDF links.

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=zermatt+cervinia+piste+map+pdf In PDF document text
    • http://files.dukesroyalguard.com/uploads/1/3/2/6/132683088/2193389.pdfIn PDF document text
    • http://files.fivesonsnaturescapes.com/uploads/1/3/1/8/131859993/zuvumira.pdfIn PDF document text
    • http://kumopi.himalayansaltandscents.com/uploads/1/3/1/4/131483044/31828.pdfIn PDF document text
    • http://files.usedlicense.net/uploads/1/3/1/8/131857650/68f440200a34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jerozex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/times_university_ranking_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7797/4678/files/88998703885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/lunavitovijivevipadowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/applications_of_mathematics_in_space_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5979/files/10268435863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/gobipuvuxadewefuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/vusijudipatonawiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/6892303336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2059/7922/files/kuwivatigelotolinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/vowidawatuwigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4405/2885/files/84819659027.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 4964 bytes
SHA-256: 4c43eccbb1698b2032a58814d40fbca7b56d2b632d1cff8120e6fc46c5640f87
font_01_sfnt_off00007895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7895 10016 bytes
SHA-256: 014f490009ef785f6e8d06ff4d0a7a7643ea77d596f7714c89cd27970e5cbf4d
font_02_sfnt_off00009ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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