Malicious PDF — malware analysis report

Static analysis result for SHA-256 1293c39e9acddaaa…

MALICIOUS

PDF

54.1 KB Created: 2020-12-03 20:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e51b2b68e97d7be2adc125d09fa3ee SHA-1: bd142158313db952b0d4a3a2c507cc7fc5e6b314 SHA-256: 1293c39e9acddaaa1bb863aa5f6ce19cbec7c95d458866216f4a2b15a98f53a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with a critical heuristic identifying a link farm pointing to 24 external PDFs, suggesting a coordinated effort to redirect users. One of the primary external URIs, 'https://traffnew.ru/strik?utm_term=lg+wm3770hwa+manual', is a strong indicator of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7930

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://traffnew.ru/strik?utm_term=lg+wm3770hwa+manual
    • https://tixaradizu.weebly.com/uploads/1/3/4/6/134652762/8952770.pdf
    • https://tenekivosorudo.weebly.com/uploads/1/3/4/5/134596066/dujepukeguvitif-tazunulapa.pdf
    • https://zidivopopa.weebly.com/uploads/1/3/4/3/134373798/lutokatugan.pdf
    • https://static.s123-cdn-static.com/uploads/4459466/normal_5fc54cf084d0d.pdf
    • https://vapesokon.weebly.com/uploads/1/3/4/3/134329795/2679997.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc10374bda9c57a97becd24/t/5fc5b778645712565401f89b/1606793080889/fatugotawitotex.pdf
    • https://static1.squarespace.com/static/5fc0c42727a199023ab4a3d3/t/5fc1759a2dd96f59182662fd/1606514075116/words_into_math_activity.pdf
    • https://s3.amazonaws.com/pomaxa/32000464927.pdf
    • https://s3.amazonaws.com/jozaponi/android_9_new_features_sony.pdf
    • https://s3.amazonaws.com/zopenave/7_badass_movie_free.pdf
    • https://s3.amazonaws.com/fosalizuzu/monterey_high_school_transcript_request.pdf
    • https://s3.amazonaws.com/feseni/receipt_template_australia_word.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb4a.bin
75da589d31c2c60310e73feb293b923000804ab43fb6c3cddca705947c3a817f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4A 4772 bytes

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