Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b7951ad6a730f5…

MALICIOUS

PDF

38.0 KB Created: 2020-08-11 20:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 137ef97f6cb1bed5eda9de8693219ad9 SHA-1: a5aa53a452582d7928524ca2c5735446704a5a83 SHA-256: f0b7951ad6a730f5e97e0a4d21db347adaea301dea3bbd1578134dced7422d6a
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains the text 'Platform revolution pdf download' and the malicious redirector URL, suggesting a lure to download a malicious file. The ML classifier also strongly flagged this PDF as malicious.

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=platform+revolution+pdf+download
    • http://naxej.miltongoh.net/uploads/1/3/0/8/130874085/6392585.pdf
    • http://files.artisandogharness.com/uploads/1/3/1/4/131407047/virofijuk.pdf
    • http://files.jenpenasphotography.com/uploads/1/3/1/3/131381612/4057249.pdf
    • http://files.ambcircleoffriends.com/uploads/1/3/2/3/132303001/2152254.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/sawapiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/redexox.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5735/files/biology_textbook_class_12th.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/celestron_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zurutadodusabexefiba.pdf
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/mirozasulapewotigev.pdf
    • https://cdn.shopify.com/s/files/1/0428/4193/1942/files/bosivat.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/suxokipox.pdf
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/jilixawuzazeregedefuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/49366936169.pdf
    • https://cdn.shopify.com/s/files/1/0436/6319/6310/files/muzopapogijerijonixadu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005719.bin
6b6c8e2cdbe7639a9e806df8656b4d49e60609ef7ef4374d5f4a1bc0214a49c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5719 5160 bytes
font_01_sfnt_off000068a4.bin
8331bd20fb03d19ecfa0e87c235cf4984df68ad3eade72e61ead97d36b1a18ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 10152 bytes