Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba04f146b368da8b…

MALICIOUS

PDF

59.8 KB Created: 2020-11-11 02:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3af2b900065794df64f24a4d6037f8ad SHA-1: a25a9336bd5890f42cb0d678f6f7e287ecf50d8f SHA-256: ba04f146b368da8bea1abf2ca0315b69d7497bce80db56805c3f68ec76f86cbf
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?keyword=hacked+online+games+raft+wars In PDF document text
    • https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/xasavo_rewimogiwiwewe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/83efc637-309c-4715-a534-90d9eddf7999/fikujiwasibafelisewoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb1476d-bd86-4d90-b92e-f7736224dab3/27677340732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa974895-9bca-4c67-83e9-ac9bf537a76f/the_virgin_suicides_screenplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddcbc200-25bf-4fcd-80bb-8a844abaf0de/adobe_acrobat_xi_pro_11.0.9_multilanguage_chingliu_kickass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e65aeec4-b59a-451e-8dd8-95567b08651b/accu_chek_performa_ii_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d29a72-47c4-49b2-a4c8-a0ae129dce77/74885863519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/346928be-ceec-4aac-ab97-a098ea2c9809/60729457179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f648c7-1b3d-48d2-8d58-06e5dc4737d6/empire_of_storms.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/4931144198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28cdeab6-7ff0-4f04-bbe8-baf06bdef466/46947942741.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/der_blechtrommel.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_off0000abf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABF3 5456 bytes
SHA-256: b29cf4f5556e9f54c4f27661415bea1233faf0dafbfb6e23d06fed4873c0fa12
font_01_sfnt_off0000be7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE7E 10112 bytes
SHA-256: 4f94ca3d27b4220f3066aad3587c045fbdb0e60269228fc0ed6c5122521268b8

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