Malicious PDF — malware analysis report

Static analysis result for SHA-256 64016a704be7c4e8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 08:17:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bd1f967614ff7a41e4d50dadb3b9050 SHA-1: 51805fef02d1e90ad3c47a5fd238c3396a784d01 SHA-256: 64016a704be7c4e8ee517399c6e07628ceb369abbdb9d335b08605e0bebc225b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to other PDFs, many of which are hosted on SEO-optimized domains, a common tactic for distributing malicious content. One of the primary redirector URLs, 'https://ttraff.cc/pify?keyword=literature+review+on+employee+absenteeism+pdf', is flagged as malicious. The document body itself contains text related to 'literature review on employee absenteeism pdf', suggesting a lure for academic or research-related content.

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/pify?keyword=literature+review+on+employee+absenteeism+pdf In PDF document text
    • http://files.busterbledsoeband.com/uploads/1/3/1/4/131454345/1938701.pdfIn PDF document text
    • http://files.unionists.org/uploads/1/3/1/4/131453060/f383e0529.pdfIn PDF document text
    • http://files.cynthiastarrheartspeak.com/uploads/1/3/0/8/130814298/lunedil_bedimowapeter_didoje.pdfIn PDF document text
    • http://dizijifub.themooryouknow.com/uploads/1/3/2/3/132303382/wadumerumoselif.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/1/0432/5025/3979/files/thyroid_hormone_regulation_of_metabolism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/79579408005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/40244287472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/86203990047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/japorekuvenowigaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/magirum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/94448730260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/34844429616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/rebaxekimilazubugad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/30054535957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/nidanidapevejos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3600/8870/files/45659446635.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_off00006ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 5524 bytes
SHA-256: 1b92af91818dc2eb7cb940d37f2ff5555f8094ef45e4417ac12160604844e6b0
font_01_sfnt_off00007d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D78 10580 bytes
SHA-256: 93b19caddfb9dd328d6600556d86c65d6bfdc8786a542c3fe2393b980f14cd3e

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