Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1cd9915f78ca48…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 18:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01103c3c7257112dd996f81a41044221 SHA-1: e5b3258a7fad49a543e7dd0119b7abe2b9a02475 SHA-256: 8d1cd9915f78ca48a3f5bd42d2f7f6a26312bf90c02d65d4c3e2095628ca04e5
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service. The primary lure appears to be a fake application guide, which redirects to the malicious URL https://ttraff.com/pify?keyword=bd+cytometer+setup+and+tracking+application+guide. The ML classifier strongly indicated maliciousness, and the link farm behavior suggests an attempt to distribute malware or phish for credentials.

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=bd+cytometer+setup+and+tracking+application+guide In PDF document text
    • http://files.hufftrax.com/uploads/1/3/2/3/132303219/7090598.pdfIn PDF document text
    • http://files.okotokshcpharmacy.ca/uploads/1/3/0/8/130814769/8829076.pdfIn PDF document text
    • http://dumal.michellejensen8.com/uploads/1/3/0/7/130739783/f6a4e7b4.pdfIn PDF document text
    • http://files.jimlaymusic.com/uploads/1/3/1/3/131380842/sedirotuzuvug.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/1/0431/5892/9570/files/boxiwovodumokamusozet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1955/0370/files/71130909036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/nutovimenilekogowaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5509/files/atropin_sulfat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/vogitun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/17848462086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/12th_class_sociology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/another_balancing_equations_sheet_chemfiesta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8930/1409/files/animorphs_book_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8817/4497/files/71265085890.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000720c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720C 5608 bytes
SHA-256: f886e6715af1f28fcd86b2f45c7e1c3fa5633309202935b31a37aa2f2133f4b7
font_01_sfnt_off00008509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8509 10516 bytes
SHA-256: 073891bb21f89c03a387d8485b3f0b006733569b5a415888f26ec16c9ddcaf9d

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