Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a744c5769599a1…

MALICIOUS

PDF

41.7 KB Created: 2020-08-11 12:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dd003542435e3780dcb225021243cb8 SHA-1: bce528495309eb40ee7d785e57056ed54b186705 SHA-256: 16a744c5769599a1e6dd2feada05c6edb73f634e489bb75313729d9c42074c13
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=mary%20beard%20spqr%20pdf'. The document's content and structure suggest it is part of a link farm designed to lure users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=mary%20beard%20spqr%20pdf In PDF document text
    • http://files.ionamccuaig.co.uk/uploads/1/3/1/1/131163867/nukege.pdfIn PDF document text
    • http://files.jamie-crockett.com/uploads/1/3/1/4/131453006/6bc17fa51d.pdfIn PDF document text
    • http://files.pgrtoc.org/uploads/1/3/1/6/131606822/moxarozid_defojepi_febapixegitip.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/1/0434/7386/2808/files/85795632036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/organizao_da_administrao_pblica_brasileira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/veletuzanuvikixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76106621034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/technical_analysis_for_dummies_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0904/7708/files/ffxiv_dps_counter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/64882141636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/19310202241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5169/5771/files/gasupolupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/diccionario_psicologico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12319118289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/organic_chemistry_klein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/zinedilavunonotete.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
🗂 Part of campaign: ionamccuaig.co.uk 3 samples

Related samples 5

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_off000065d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D0 5376 bytes
SHA-256: 59481ea6d843e10b9e06f220c510965aba9e25078d2908a23bf3e0748ecc26f2
font_01_sfnt_off0000782c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 10180 bytes
SHA-256: abc9e7eeb81f41a9b33494c4f7a5561071c8f10be2b0cd9193db329849781b5e

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