Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bd7872bbdfb2ee…

MALICIOUS

PDF

38.7 KB Created: 2020-08-12 13:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea3bcf19e62ee8a1922dafbf75d367c0 SHA-1: 4a7d12ca14016b0266a1bfed5f53238c2c5075fb SHA-256: 75bd7872bbdfb2eeef06d8ef1787023f5db6b8a98952210a19d6a1765872d1ea
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service known for hosting malicious content. The document body also contains a direct link to this redirector, which is disguised as a download for 'Acronis backup 12.5 standard pdf'. This indicates a phishing attempt to trick users into downloading malware. No scripts were extracted from this sample.

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.ru/pify?keyword=acronis+backup+12.+5+standard+pdf In PDF document text
    • http://files.skski.net/uploads/1/3/1/4/131453904/25cef2893e82b.pdfIn PDF document text
    • http://files.free2code-initiative.eu/uploads/1/3/1/4/131407572/36810294131378a.pdfIn PDF document text
    • http://files.electricotterdesigns.com/uploads/1/3/1/3/131380045/7aa38.pdfIn PDF document text
    • http://files.sjsyndrome.com/uploads/1/3/2/6/132681901/6280815.pdfIn PDF document text
    • http://files.daniellewestdyk.com/uploads/1/3/1/4/131437636/gituse.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/1/0429/5308/0991/files/35370671356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/nidawovexem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/zorezutubesosazof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/gopejisusamifakuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/dujaruvaviduzenovuvexiwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/sizufogolup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/criminal_law_book_2_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/pesebejota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/manager_are_born_or_made.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0659/files/base64_encode_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/april_fools_spelling_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/50365846683.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 8

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_off000057f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F9 5648 bytes
SHA-256: 6e64252c2489bcc2b6ede8074ca4a4cab1198d40fad1cba3399953ac0f139ede
font_01_sfnt_off00006b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B44 10184 bytes
SHA-256: ecc55f1480b376405fdd4ae817382eb657acd56a9a6c95d5d9fba7090f219906

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