Malicious PDF — malware analysis report

Static analysis result for SHA-256 231a08b727bd12ee…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 08:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 902449e053e987a90c9f4a7e2c4c7b4b SHA-1: 3c4f1b7268065ee5b3af65371153f620c0b48a86 SHA-256: 231a08b727bd12ee48e3caec04bd11293a4de2d2dde931e5bbb0f97b8382008f
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=facebook+advertentie+formaat+foto'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to Facebook advertising formats. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or content distribution strategy. 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.ru/pify?keyword=facebook+advertentie+formaat+foto In PDF document text
    • http://files.psaba.org/uploads/1/3/0/8/130874368/fuzorofigiv_fuzepoxenuxefe_moludizarogube.pdfIn PDF document text
    • http://files.cakeballsforacause.com/uploads/1/3/1/6/131606630/e8605c.pdfIn PDF document text
    • http://files.drmikecounseling.com/uploads/1/3/1/6/131637714/voxaduz_nimatusulaw.pdfIn PDF document text
    • http://files.tinwagonboutique.com/uploads/1/3/0/7/130739163/badoxanir.pdfIn PDF document text
    • http://files.amdacious.com/uploads/1/3/0/8/130874455/8589287.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/1/0432/7017/6928/files/sheet_music_chopin_prelude_in_e_minor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/51197736839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2849/5001/files/speer_reloading_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/govivun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/crema_de_vainilla_artemisa_tellez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/cantos_de_adoracion_al_santisimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/kurekobogutuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/40074508587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/60606024723.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_off00006078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 5176 bytes
SHA-256: 7df658cadbfec926a64220178009cacae423265005932130707c8f77a79c9773
font_01_sfnt_off000071fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00007a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8A 10288 bytes
SHA-256: 0773d6efff9a2a0e278bfef24c6327fe04e24ae3a4c0c5cffde401fcfdd8fa3d
font_03_sfnt_off00009ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DED 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939