Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5ebfa303732c56…

MALICIOUS

PDF

39.2 KB Created: 2020-03-12 05:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: be4894e60a2617f15df6ed4d3ce096b8 SHA-1: 7ec07d168b00d14c402951cc0a0665877c9cb032 SHA-256: ef5ebfa303732c569909aa79391e60b526be29062b6cff2331657e8511537e2d
92 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, suggests a lure related to 'Indian constitution amendments', aiming to trick users into clicking the malicious links. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://hnstravels.voyagerwebsites.com/uploads/1/3/0/6/130604276/130604276.html#important+amendments+in+indian+constitution+for+upsc+pdf+in+hindi
    • http://ottoorganics.com/uploads/1/3/0/5/130543437/7950504.pdf
    • http://hermitagefarmgrandgala.com/uploads/1/3/0/3/130313453/bevoripuwekalej.pdf
    • http://majormarmot.com/uploads/1/3/0/6/130621131/jivuferupiwames.pdf
    • http://mta-sts.mail.kavetown.com/uploads/1/3/0/7/130740128/6110451.pdf
    • http://www.pawsforacauseinvitational.com/uploads/1/3/0/9/130969754/7096683.pdf
    • http://shareyourrv.com/uploads/1/3/0/7/130776533/4b3567ce.pdf
    • http://www.bpchin.com.au/uploads/1/3/0/4/130435956/6970313.pdf
    • http://ladyslaycast.com/uploads/1/3/0/2/130291474/gifixaxu_nunikavet_pejunib.pdf
    • http://www.hisstudioart.com/uploads/1/3/0/5/130544138/5595838.pdf
    • http://myburnsfamily.com/uploads/1/3/0/6/130621836/8cc347f8.pdf
    • http://canotekpark.com/uploads/1/3/0/7/130740433/914228ec7e47.pdf
    • http://www.fitzenterprisesllc.com/uploads/1/3/0/2/130272462/zanabeziwegigu_vokakilexataxi_fosawemi_watuzobatugadox.pdf
    • http://www.monsieurbidule.com/uploads/1/3/0/5/130588740/senevimigajugi_wilosam.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_off00007056.bin
85d9afe25fdef0006c6b2237864cd278f5e1a6d0431ee25e82f84f117ea70116
pdf-font-stream PDF embedded font (sfnt) at offset 0x7056 7884 bytes