Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e13ccfb4dc22aea…

MALICIOUS

PDF

32.7 KB Created: 2020-05-18 12:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8058f77d49129dddf9ff45503e99897 SHA-1: 095863c1816e0d6a0b8fc037ec31cbc37c5bce0b SHA-256: 2e13ccfb4dc22aeaed23602c5078c01b4f82cf3244567563a397b03c3fd10c87
92 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL points to a page offering 'poweramp full version unlocker apk c', suggesting a lure for potentially unwanted software or a phishing attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the link farm and the nature of the content imply a distribution mechanism for malware or unwanted applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://insightin2music.com/uploads/1/3/0/3/130323131/130323131.html#poweramp+full+version+unlocker+apk+c
    • http://climb2fly.com/uploads/1/3/0/6/130605075/kusasil-sotuturisow-bilewalita.pdf
    • http://lamoradabnb.com/uploads/1/3/0/3/130312998/440dd.pdf
    • http://elementsevents.net/uploads/1/3/0/4/130488304/burujopapav.pdf
    • http://williamchackett.com/uploads/1/3/0/5/130551279/28b243c.pdf
    • http://lotusforeststudio.com/uploads/1/3/0/6/130605174/2617407.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005641.bin
d1748c3a6f519e8da5e55786e360ea1ce7ab4d3aad9b6e9552bcc03a5c5defcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5641 9952 bytes

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