Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4688b090caea1c…

MALICIOUS

PDF

43.0 KB Created: 2020-08-24 01:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0313e181f59e393445a795e2c33a762 SHA-1: 739a34415678a1e518e558d96588550d74fd28c7 SHA-256: 3a4688b090caea1c4d0891ef0eb57ae3f81b7a3655932853c108bb621c4fd4f5
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, https://ttraff.ru/pify?keyword=windows+10+activator+batch+file. This URL is presented as a 'Windows 10 activator batch file' lure, indicating a social engineering attempt to trick the user into downloading potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed malicious link behavior.

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=windows+10+activator+batch+file
    • http://zexiwakir.kahulapiko.com/uploads/1/3/1/4/131438188/4e7bb75c1911.pdf
    • http://wakexoro.hipababy.com/uploads/1/3/2/8/132815176/55cff1.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/93122432323.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/11947701322.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/wojibak.pdf
    • https://cdn.shopify.com/s/files/1/0433/4243/0362/files/aws_certified_solutions_architect_professional_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/cantos_de_adoracion_al_santisimo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/73434798782.pdf
    • https://cdn.shopify.com/s/files/1/0432/0883/5236/files/81355791851.pdf
    • https://cdn.shopify.com/s/files/1/0434/8788/7526/files/vupoxademoruruzafap.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_off00005bf6.bin
70bc72330b9caa362dcfc1632749a89774bd07e582c9c30b3aabc70c1a5213c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 5608 bytes
font_01_sfnt_off00006f24.bin
3448d170b8f66a30141d48ca0589da4ccd7eb88eb95c9737583655270dfc500e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F24 15560 bytes

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