Malicious PDF — malware analysis report

Static analysis result for SHA-256 578289a2e761bacf…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 00:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed5ee158b3a1243378f29b8db023b8b9 SHA-1: 383a5e002425b268d0dd85f7ef9d2d32b20e3f37 SHA-256: 578289a2e761bacfe6869dcd5035be800552574d60f1916afa63033bd18c430c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=clinical+anesthesia+book+pdf'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed for SEO manipulation or to host malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=clinical+anesthesia+book+pdf In PDF document text
    • http://files.canadaparkour.com/uploads/1/3/2/8/132814168/9690095.pdfIn PDF document text
    • http://files.vegpatch.org/uploads/1/3/0/7/130738620/2504082.pdfIn PDF document text
    • http://files.plasticfreewilderness.org/uploads/1/3/0/9/130969699/xujuvuwudilel.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/1/0427/8904/4383/files/67419872703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0493/files/internship_application_letter_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/an_introduction_to_abstract_mathematics_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/96388475924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/44751421760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/38059293849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/5417/5132/files/voucher_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0210/0899/files/jokajedujub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5798/files/value_of_playboy_magazines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/vujakakirijasapolamife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/69283316779.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 2

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_off0000604d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 5256 bytes
SHA-256: 6e3db9e6917a4a8721df706fb77b9f88eeb5f422cb2fced8c642be33ed0179f9
font_01_sfnt_off00007227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7227 10060 bytes
SHA-256: 61fdab0597c382e5e096fd9caeb88d842b7ef987e6a209eb777654a1999682c0

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