Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7b2d4c8dc5aabb…

MALICIOUS

PDF

64.1 KB Created: 2020-08-19 11:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15c5d0ceba1f82e4f012333a7e527f7c SHA-1: e7ddc34573e94ae8ddcc140b18d176b9b222ea22 SHA-256: 2c7b2d4c8dc5aabb1a7f096348ffaff5beca550c6ee075e928937408951df06f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to appear as free movie song downloads. One of these links, https://ttraff.ru/pify?keyword=aashiqui+2+film+song++free, is identified as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious infrastructure, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=aashiqui+2+film+song++free
    • http://files.anthonypalmiottiauthor.com/uploads/1/3/0/7/130739470/zizejazamal.pdf
    • http://ririk.ilpensieroyren.com/uploads/1/3/2/8/132815114/pojoti.pdf
    • http://files.treasuredmomentsphotography.net/uploads/1/3/1/8/131856158/xujozamodarujusipezo.pdf
    • http://files.victoriakileart.com/uploads/1/3/0/8/130814735/lilapozizopepofagen.pdf
    • http://xisunobi.haleysbakeshop.com/uploads/1/3/1/6/131637814/205348.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/liwulugoroxofuxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/medical_report_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/87543974270.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/john_lewis_duvet_cover_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/redes_sociales_y_autoestima_en_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/89231645499.pdf
    • https://cdn.shopify.com/s/files/1/0440/8705/0390/files/17929325822.pdf
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/35665905256.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/el_arte_minimalista.pdf
    • https://cdn.shopify.com/s/files/1/0440/1014/3902/files/40318060918.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bf9.bin
11ac62d09b6c37d6bc7abadaba9e0f033fb82b201f04f1f5d2328f1b7b43f526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF9 5428 bytes
font_01_sfnt_off0000ae4c.bin
1acf2a0b0b30acfab36bcce4c8aefdcef71386a983b2b310f6f42f7c1c82754a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4C 15228 bytes
font_02_sfnt_off0000de13.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE13 16204 bytes

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