Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed33a99ec87b6e1…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 23:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ee0bd82709e30426db04256ea1deb37 SHA-1: 7522d2427523dc1b84cdca2e64be981130943a0d SHA-256: 0ed33a99ec87b6e1489481654beb1690e3fd0043824f0a97c7a9620a0c86d04b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and then to various Shopify-hosted PDF files. The primary lure appears to be 'actuarial mathematics ebook pdf', suggesting a phishing or scam attempt to trick users into downloading potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous links to redirectors reinforces this assessment.

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=actuarial+mathematics+ebook+pdf In PDF document text
    • http://files.moranenterprises.com/uploads/1/3/1/8/131856723/be1151cbc9afd.pdfIn PDF document text
    • http://files.adventurebiologist.com/uploads/1/3/1/3/131380337/5184942.pdfIn PDF document text
    • http://files.eih111.com/uploads/1/3/1/3/131380604/geled_fewizogofa_silole.pdfIn PDF document text
    • http://files.ahrchurch.org/uploads/1/3/1/8/131856498/2c252b4.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/1/0431/8694/6206/files/vagusebobog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4481/4500/files/wusujudim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8157/8136/files/votipedilamusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/bwv_565_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/sims_3_registration_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/43925590046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/beira_alta_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/pewovevekejalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/zujudusivudovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/54532243930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5610/2565/files/nefeguvilomidowo.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 3

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_off00007536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7536 5588 bytes
SHA-256: 42a70a7801dcd3498058dd8939bd44fd9e1a812b33171c2f569c6b3afa9d2778
font_01_sfnt_off0000880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 10820 bytes
SHA-256: 525790deb7ea4e92261392a7805969194df6eb643264a03b6a4ae33e6d23becb

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