Malicious PDF — malware analysis report

Static analysis result for SHA-256 062f2602474a1f7d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-16 23:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54bc07085013cd76f33ec4bec126be79 SHA-1: 43a9c4344a80632a1b7ff2a8887b344e55417caf SHA-256: 062f2602474a1f7db152f3f52ef172c64ca38d6a1f76651bfb2918610e138ef2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game download, which aligns with the redirector's purpose. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many of which point to benign Shopify URLs but also include several unknown or potentially malicious domains.

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.com/pify?keyword=sonic+all+stars+racing+transformed+apk+adreno
    • http://negelop.doneyparkhomestead.com/uploads/1/3/1/6/131636725/gukuvegabar.pdf
    • http://gemimof.stmarync.com/uploads/1/3/1/6/131606027/db19ef37db5.pdf
    • http://files.sproutandgrow.org/uploads/1/3/1/4/131437924/binovim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/54487930731.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/vipolomibokalad.pdf
    • https://cdn.shopify.com/s/files/1/0435/5053/9940/files/revista_de_tecnologia_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/jutuwamexutewamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/27104471325.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/69038422547.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/zijimuderilizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/kipitovebunipebiserudinaf.pdf
    • https://cdn.shopify.com/s/files/1/0450/9850/0259/files/apspdcl_junior_assistant_notification.pdf
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/68552522006.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/xabunokevegizuvudaburimi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9755/8941/files/anuradhapura_map.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b83.bin
10cb4491935f9b351242db6a7aa88bde284cd7ca5d7490e7d0cc3e95fd8fc5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B83 5640 bytes
font_01_sfnt_off00006e8d.bin
244429e7b30d2fb674fc904338bea4f8ad7b280b01766f783802534c9dcd18fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8D 10188 bytes
font_02_sfnt_off000091ab.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AB 16092 bytes

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