Malicious PDF — malware analysis report

Static analysis result for SHA-256 75029733cf938d85…

MALICIOUS

PDF

33.7 KB Created: 2020-08-12 02:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7515cc42cc661d35104cc43530fca2f1 SHA-1: 73ed9041438fbc7919d52e9cbb29c744b2a62104 SHA-256: 75029733cf938d8552ecfd135ab0df84a6d5c01e5b462de616ff886ccf98e6a5
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a "crucial conversations participant toolkit pdf". The presence of numerous external PDF links, many pointing to Shopify domains, suggests a link farm designed to attract traffic, with the primary redirector leading to malicious infrastructure. 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.cc/pify?keyword=crucial+conversations+participant+toolkit+pdf In PDF document text
    • http://files.tinytownllc.com/uploads/1/3/1/6/131606368/waxesediruralen.pdfIn PDF document text
    • http://sowadoben.iocsummerschoolexeter.org/uploads/1/3/0/9/130969352/radagisipe_limupe.pdfIn PDF document text
    • http://files.hiddenwonders.co.uk/uploads/1/3/0/7/130738875/97a95c3d0b3.pdfIn PDF document text
    • http://zinep.bybuck.com/uploads/1/3/0/7/130738970/6f7d40.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/1/0434/1635/4977/files/cancer_gastrico_sintomas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/63916604743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/bermuda_triangle_book_in_marathi_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/systems_understanding_aid_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/40909805908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/campbell_biology_in_focus_test_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8145/6023/files/70735317393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/45803650392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/cold_formed_steel_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/fatizuleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0254/1726/files/libro_sobre_el_amor_propio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/30603006096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/48104052967.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 4

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_off0000471b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x471B 5176 bytes
SHA-256: b882827ee7f48f456cba07f0a7f90a19d211a8f92aa1bcc7abd03951f8912cc0
font_01_sfnt_off000058ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CA 9636 bytes
SHA-256: 3c3bf176d01df76ca0d29fc51ac7a1e42c1b086af98fe35bb362acc96fe80638

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