Malicious PDF — malware analysis report

Static analysis result for SHA-256 623f2c42270a4ed8…

MALICIOUS

PDF

47.5 KB Created: 2020-08-24 04:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f856aef87d52902df3a5fe8871d89cb SHA-1: 15684a76a95fcad30446a6c83bc13e08a092a377 SHA-256: 623f2c42270a4ed860b04c1da68fed2c7cdda16c4afb271e39ca5d5ea2a24bb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to SEO-optimized PDF files hosted on Shopify, likely to obscure malicious intent. A critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=real+essential+sheet+mask+collagen'. This suggests the document is part of a phishing or scam campaign designed to redirect users to malicious sites. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=real+essential+sheet+mask+collagen In PDF document text
    • http://vizopagod.settimocieloretreat.com/uploads/1/3/1/0/131070571/masexelad.pdfIn PDF document text
    • http://gekik.joewoodmanwildlife.com/uploads/1/3/1/3/131381679/b7c553343.pdfIn PDF document text
    • http://balad.adhdsolutionsforlife.com/uploads/1/3/1/6/131637136/8688288.pdfIn PDF document text
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.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/1/0432/2993/7832/files/eminem_agent_contact_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/23464312427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/lugiwej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/jibixiximero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/92855903006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/77168695540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8110/files/35989137727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4504/3876/files/sistem_pencernaan_manusia_jurnal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/faderulanuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1394/files/definition_of_qualitative_research.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593B 5188 bytes
SHA-256: 0d38fb7d659c1e30d95b0a25c197df1830438fa00eca5ee1b6371f22ddb03956
font_01_sfnt_off00006ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB4 3128 bytes
SHA-256: ad46f4648fe0d0f46fd9255d76087ea18cd9f5ecb093713eca4ae3edeebced26
font_02_sfnt_off000077ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 10332 bytes
SHA-256: 239b8e0e8048bede40f07c0b99de99245f911ce9073b23dc24b45d03590d2df7
font_03_sfnt_off00009b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B34 16276 bytes
SHA-256: 5ea7567cdbf98ba8c8897777593ace99eeb1c2989ccecea4e155e9cabcd72575