Malicious PDF — malware analysis report

Static analysis result for SHA-256 0adbf63bcbb1466d…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 05:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36b5bb989abd0a98d2229296f7485721 SHA-1: bcb0f17803d1c66d9fb0c18bee778e0423970cb5 SHA-256: 0adbf63bcbb1466daf3b3e78543899f0d992c1aa291384f1a8a8f52b70ab92eb
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text related to a game driver issue. The document body, though heavily obfuscated, contains the malicious URL and references to the game. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to a phishing or malware download site.

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/wix?keyword=rainbow+six+siege+driver+not+supported
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/58311304391.pdf
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/77263655496.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/zxing_android_barcode_scanner.pdf
    • https://cdn.shopify.com/s/files/1/0431/8874/8452/files/90126664650.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/broadcast_android_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/beamforming_5g_sharetechnote.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/72168400124.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/puzuvurupabiwexivomaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/55258052084.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/73050125907.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/fegizidoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1889/files/development_economics_masters.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/94563352431.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/xedidafu.pdf
    • https://m.youtube.com
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054b6.bin
568c473e57cdf9f8b16228a647555615d02984ea905d9c1f6bd115adc656aa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B6 5344 bytes
font_01_sfnt_off00006705.bin
7d9c928318e9809f612b5dee93d5d81cbe2d30d328357109cd8c11473af36215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6705 9828 bytes
font_02_sfnt_off000088af.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88AF 4324 bytes

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