Malicious PDF — malware analysis report

Static analysis result for SHA-256 375388ef63cae926…

MALICIOUS

PDF

40.4 KB Created: 2020-08-05 16:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fe531e59088a2188a91cbce84bcccfd SHA-1: 715a4afe2ed5c672e03f7a103d2288a714786fa7 SHA-256: 375388ef63cae92606ed7964258ab5c322610149d49da31111ec4577c2f666b9
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=hidroxiureia+na+anemia+falciforme+pdf', is identified as a malicious redirector. This suggests the document's purpose is to act as a link farm, directing users to potentially malicious content through a series of redirects and disguised links.

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=hidroxiureia+na+anemia+falciforme+pdf In PDF document text
    • http://files.midwifeaddison.com/uploads/1/3/1/3/131379477/sonemagek_mazera_xebav.pdfIn PDF document text
    • http://files.wavesyogastudio.com/uploads/1/3/1/6/131636700/1131704.pdfIn PDF document text
    • http://files.whatsgoingonatpoundlane2020.com/uploads/1/3/1/6/131606179/07b4a98.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/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0445/files/mvk_on_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/24437088357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/verusafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/92155036652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/october_2020_calendar_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/50378033651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/comfort_zone_cz499r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5410/2688/files/mokeditasixugew.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_off00005f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3D 5152 bytes
SHA-256: 1aff08f7cdb989f9226496aff16ffb20b06b32b554b13ffe20121c390d6e69d9
font_01_sfnt_off000070b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 11000 bytes
SHA-256: c92260b9bae3c0c8419434ed867a6bbe8b718d2893f38e27a8ba16cf6d86b140

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