Malicious PDF — malware analysis report

Static analysis result for SHA-256 675c912b5321d6f6…

MALICIOUS

PDF

42.1 KB Created: 2020-07-26 09:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef54ae837a5cc846905a9e9593a4ecb1 SHA-1: 7840644241e724c213b01ff69974c352cfb78b1d SHA-256: 675c912b5321d6f6f6b6863282e82a75976913eb330426cef5e6788378255142
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to reference a movie trailer, suggesting a lure to entice users to click the malicious link.

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.cc/pify?keyword=aruvam+movie+trailer
    • http://files.nancyjanefarnum.ca/uploads/1/3/1/4/131453735/8963362.pdf
    • http://files.coalitionforanimals.com/uploads/1/3/1/3/131383602/pasadel_gawojegoxow_duxafe.pdf
    • http://files.kim-russell.co.uk/uploads/1/3/1/3/131379406/3618390.pdf
    • http://files.marcdurand.net/uploads/1/3/1/3/131381046/gademiligog.pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/17095825282.pdf
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/13826583400.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/xuwefujofuxex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/16506608841.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/tibusisezibuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/dupifusemiruxaxademek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/zeladivamufajomalaxe.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/60261286856.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/81344675077.pdf
    • https://cdn.shopify.com/s/files/1/0440/4294/4677/files/24407138139.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/62825272179.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9907/files/vivikig.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/83672478491.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006957.bin
c2bcd0ca46d09e28f10896be7772f732f09b01190ce0d6dbfc3c755307f943f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6957 4476 bytes
font_01_sfnt_off0000788a.bin
23f653193553df1b8971d6686963afd9e57d3ec2a26835cf28749126b6da471a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788A 10180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.