Malicious PDF — malware analysis report

Static analysis result for SHA-256 d31f81cba66ed261…

MALICIOUS

PDF

43.4 KB Created: 2020-08-28 09:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd55b04be69db7273539aa2d0b29ae07 SHA-1: a9f51ea02368eff46950d40a092a14de9ccffd9a SHA-256: d31f81cba66ed261d6c8f723d61766ea8f521d7c3fe18db1b05aeacc449e0bb8
194 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Shopify domains, but one critical link redirects through ttraff.com, a known malicious redirector. This suggests the document's primary purpose is to trick users into visiting malicious sites by presenting them as PDF downloads. 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.com/pify?keyword=robotica+control+de+robots+manipuladores+pdf In PDF document text
    • http://jevifop.cwmfindingaids.com/uploads/1/3/0/8/130814328/rolanakizip.pdfIn PDF document text
    • http://maxigoxa.healingthroughtheendoflife.com/uploads/1/3/1/4/131437423/6018453.pdfIn PDF document text
    • http://todudixe.hilliardbradleyfootball.com/uploads/1/3/2/6/132695569/foxukaxuwa.pdfIn PDF document text
    • http://kaneseped.brackloonns.com/uploads/1/3/1/4/131482975/1842320.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/1/0428/6971/9199/files/80849103399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/vapalavabel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/zotowogim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/78090895147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/one_step_equations_with_fractions_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/99983730869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/70798770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/45394558773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/dazorogudubuzuke.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 1

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_off00005c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C97 5328 bytes
SHA-256: a962f8625b477d9328d9c794472db92ced0e0548533d2df61ded5210803054af
font_01_sfnt_off00006e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 10112 bytes
SHA-256: 6650a5c40680bf7b20cc1a6d285ad27279faabf11a7110564f9b507db864946b
font_02_sfnt_off000090d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D8 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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