Malicious PDF — malware analysis report

Static analysis result for SHA-256 8609f64aee41e299…

MALICIOUS

PDF

41.4 KB Created: 2020-07-27 20:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11b099d52414c978f8af33998b670b51 SHA-1: 7ac608a28346da5e7c88407a61b9c6d59592282a SHA-256: 8609f64aee41e299862d3a8fcd48d9a6cfb9c2d1e77abb5cfe803274baf9031b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bhojpuri dj remix song' and metadata indicating it was generated by wkhtmltopdf, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which is likely used to funnel users to a malicious 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.cc/pify?keyword=bhojpuri+dj+remix+song
    • http://files.watervillefederated.com/uploads/1/3/0/7/130740547/62f9771259f15d.pdf
    • http://files.thetlacademy.shop/uploads/1/3/1/3/131384789/dupive-madelubupazape-dezarekinoza.pdf
    • http://files.anastasiacollinsart.com/uploads/1/3/1/3/131379759/9029913.pdf
    • http://files.wat
    • https://cdn.shopify.com/s/files/1/0431/9408/9635/files/29218902761.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/sufogevu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/44088125207.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/96469424034.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/sipazujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/75592973866.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/sobapoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/witojavojezexewepuri.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/tijugokubixisuwedopepiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/33335301254.pdf
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/dabekolagepemujusakifosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/pakidutawugad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2916/files/39715535538.pdf
    • https://cdn.shopify.com/s/files/1/0438/4201/1286/files/lalurubimalibido.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_off0000580c.bin
666fc9c2170b47f60cc6d2b8405a73a8be7ab00e8382c620dcbc9c2c5601f8d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580C 5124 bytes
font_01_sfnt_off00006953.bin
1a0ff0a781da26834c8c85bdb11b6d6c6c263751d376e159b620ed599f69517f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6953 9912 bytes
font_02_sfnt_off00008b6a.bin
e6f2f56e1f66a2c3ca30b7f35e26e8795dbf00ea1b267ed37365555ac23901da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6A 3200 bytes

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