Malicious PDF — malware analysis report

Static analysis result for SHA-256 9337bd7db8b40aaf…

MALICIOUS

PDF

39.4 KB Created: 2020-08-03 09:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02cd07a5b0ab57e533baf17eb58fa29d SHA-1: fc919bf5cf029acf10e2d0356995d9966da66c5e SHA-256: 9337bd7db8b40aafd1531aa2e834ecfe21bdf169d9db7011f375649f832c0e61
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, likely to distribute malicious content or engage in SEO poisoning. The ML classifier strongly supports the malicious nature of this document. No scripts were extracted, but the primary attack vector appears to be the embedded malicious and numerous SEO-linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=vi+delete+all
    • http://files.fullcirclearts.org/uploads/1/3/1/4/131407406/jadukakunegadewesa.pdf
    • http://files.hannirosemindfulness.co.uk/uploads/1/3/1/4/131409128/megolikakisotifomi.pdf
    • http://files.susannahcorrington.com/uploads/1/3/1/3/131383838/c07345c63e.pdf
    • http://files.pilchstudio.com/uploads/1/3/0/9/130969160/49fe3.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/speer_reloading_manual_14_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/nuzunafizaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/fujokifiviluvikusukozo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8374/0822/files/dajij.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/xisusedafesilum.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/96311055703.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/70183232703.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/81145069849.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/43225048184.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/jowipomigasowakumeso.pdf
    • https://cdn.shopify.com/s/files/1/0437/4528/0161/files/73668732608.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_off00005cd7.bin
36c42625f9dbd188d0356f9f01efd3d3c9e6ff3c389ac1ebbfcf416531e790b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD7 4508 bytes
font_01_sfnt_off00006c42.bin
f6d96625747ef318b64942d83b75d0ec77c072d98443a23a585589e002afcd75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 10840 bytes

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