Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0df9b6c841a657e…

MALICIOUS

PDF

39.3 KB Created: 2020-08-03 12:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16f1b2a842e045984cb3cf6e0afbfdb5 SHA-1: 790ec1c90d3bb33ff6a38d99145d266c4fa29b3c SHA-256: e0df9b6c841a657eb1cfc8d45df0fafccb55650bd42f140e3d6f56e6e3665964
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), and another identified a large PDF link farm. The document body contains text related to 'Carrion crown interactive maps pdf' and includes the malicious URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=carrion+crown+interactive+maps+pdf
    • http://files.hightechtintplus.com/uploads/1/3/1/3/131384709/6589227.pdf
    • http://files.markpacoe.com/uploads/1/3/1/3/131382497/baluditokitap-xadidozab-tagamaviwaf.pdf
    • http://files.protectivebehavioursconsortium.co.uk/uploads/1/3/1/4/131407459/78a21c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/39816635564.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/zakisekedezabexizetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/vibezoterenon.pdf
    • https://cdn.shopify.com/s/files/1/0435/2707/8042/files/66661676415.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/16262929978.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/rikudusegifijezojin.pdf
    • https://cdn.shopify.com/s/files/1/0429/3709/0211/files/54378449677.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/netonozorokemerexuri.pdf
    • https://cdn.shopify.com/s/files/1/0437/0789/1877/files/buguxopixokixameguroxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/15798016583.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0502/files/74576625617.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/54718803264.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/xupefilotulejewa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/3765227115.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_off00004c14.bin
e1a2dd24a5f90092f91907566ef95677516efd153e7e9faa3708da97cff560ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C14 5232 bytes
font_01_sfnt_off00005de0.bin
f694120ba8805daa429de44261c8a5830c7c682e67868ddc526a9818950bf40e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE0 10076 bytes
font_02_sfnt_off0000805d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x805D 4324 bytes

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