Malicious PDF — malware analysis report

Static analysis result for SHA-256 37310573a5cfeeca…

MALICIOUS

PDF

47.8 KB Created: 2020-08-10 02:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ccd750e37a86799b95986742c8bbc7a SHA-1: cdbfc77e19d4ce08f48469e8c19aa84a8217a0e4 SHA-256: 37310573a5cfeeca855f5f78897c8e9ada725649cd4ab1610cd69f011f68ea75
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link redirects to a known malicious domain, ttraff.cc. The document body text is heavily obfuscated but contains the string "Statin guidelines 2020 pdf" and the malicious URL, suggesting a lure to disguise the malicious redirector. 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.cc/pify?keyword=statin+guidelines+2020+pdf In PDF document text
    • http://files.dunlapcoc.org/uploads/1/3/0/7/130739809/47821ad9171ad.pdfIn PDF document text
    • http://files.sqrlzinc.com/uploads/1/3/1/8/131871439/3650316.pdfIn PDF document text
    • http://fojigasof.agodfreytranslations.com/uploads/1/3/0/7/130776485/gisulinolewimi.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/1/0435/4736/1439/files/mac_preview_add_png_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/40030299914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/wujibibamogelugelezadix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/auditoria_em_sistemas_de_informao.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/62660747468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/pravana_color_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/pezidewujidivalata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/american_government_clep_practice_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/xebotezovejugas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/34932874410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gadawatozuwagujezudoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/43148063432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nipexaledova.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 3

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_off00007b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 5488 bytes
SHA-256: a9e269eaeb2587e82c2678d8ba991374f8377bba63f512966196bf005b6afdda
font_01_sfnt_off00008e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0E 10496 bytes
SHA-256: 28d81a8fd79d98f330e0519fb5c138e7f2f3052b10d8c82a9d3dde9cfed3425b

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