Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e7ab77e3396108…

MALICIOUS

PDF

57.2 KB Created: 2020-08-19 23:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae71296eca1c7b2ab109c29a21604a29 SHA-1: 9ef85c16d7e4c334234eec40f52c01b33268b12e SHA-256: f1e7ab77e33961084b0a1cc8f6fb78bd8260a09970a1ac62278af9722cd3b8f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=baldor+pdf+calculo', which is a strong indicator of malicious intent. Additionally, the document exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also flagged this PDF with high confidence. The presence of these elements suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution.

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=baldor+pdf+calculo In PDF document text
    • http://zalamef.youngoakmorgan.com/uploads/1/3/0/7/130776225/4364145.pdfIn PDF document text
    • http://files.foldadeaf.net/uploads/1/3/0/7/130739185/2981515.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/1/0430/4338/9597/files/togagixilijinekekerilufin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/12414019234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9020/7135/files/budismo_para_dummies_completo_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0560/6049/files/algebra_formulas_for_ssc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0771/2155/files/mystic_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7721/0005/files/autumn_leaves_partitura_piano_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/antibacterial_activity_of_zinc_oxide_nanoparticles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/pifexiboxikubedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/duzemiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5805/9671/files/mp4_bollywood_movies.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_off000084f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F8 5020 bytes
SHA-256: dc3246fb2514bd649c435bdd01e8b2f8b38bd0d066e9111e56697aec27ba5d41
font_01_sfnt_off0000960f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960F 2092 bytes
SHA-256: 9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2
font_02_sfnt_off00009fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB0 10224 bytes
SHA-256: fdb0a835a72be73d95fe010f2d153d14ccc079dedbc0951beb4846432a95ed75
font_03_sfnt_off0000c2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2BB 16080 bytes
SHA-256: b118ad4a5f0f66e944d0a6e82a0dad6050c27e77cb1eabf64d07f40874ae21b7