Malicious PDF — malware analysis report

Static analysis result for SHA-256 29dbf776a6986cbd…

MALICIOUS

PDF

44.8 KB Created: 2020-10-28 15:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 623d1342858857c6e19811b51ef661f4 SHA-1: 4213c2ea3f604c5d86bda3e2d214ec788595e4ad SHA-256: 29dbf776a6986cbd8639e43b1ebf2b88c85f65a2609e1f8b4adb9eda978e743e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links designed to appear as legitimate content, but they redirect to malicious infrastructure. The primary redirector URL is https://gettraff.ru/strik?keyword=project+free+tv+movies+a-z, which is flagged as malicious. The document's structure and the presence of many links suggest a link farm or SEO manipulation tactic to distribute malware or phish users. No scripts were extracted, but the PDF's nature implies it's intended to trick users into clicking malicious 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://gettraff.ru/strik?keyword=project+free+tv+movies+a-z In PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/xakugovajedajav.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/lazejiwe.pdfIn PDF document text
    • https://dowamiwimeguv.weebly.com/uploads/1/3/0/7/130775936/a553ce2a.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dbbd04.pdfIn PDF document text
    • https://mazovibodekimiv.weebly.com/uploads/1/3/4/3/134398511/rovafovefaf.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/1/0431/0233/9232/files/cervical_radiofrequency_ablation_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9448/4147/files/2004_toyota_avalon_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5213/8137/files/android_9_patch_change_color.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae34e17-7543-49e7-8a03-2a54dbc833b2/revegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d4e45e5-4eff-4e2d-98e1-267390acc898/moment_of_inertia_of_a_solid_cylinde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3943/9032/files/40495902332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7290/4088/files/kiridumudawugot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa9e9f6-a3fc-49fb-b2e2-7db0f04c1da9/gonowilifalorabawavefofip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/mokapizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4064/3521/files/kevitutefuridetemavimob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1392/9630/files/possessive_noun_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7b7e298-5596-4799-b8b4-4be23c3ffedc/milftoon_no_internet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4755/7552/files/vutufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6336/0701/files/judutigume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e43a6e74-3111-48af-9c6c-dd7fb5ef5101/93924573588.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F7 5216 bytes
SHA-256: e1dce7dcab4015ffe208164c7001c1256f5f77a93d61e6a530072a9150a4e9d0
font_01_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 10048 bytes
SHA-256: c919520fa7243615feea218f7782c3f6d0fcbb3b0eee83d87cc3fdd0c56488f5