Malicious PDF — malware analysis report

Static analysis result for SHA-256 5877fe91a1c5b700…

MALICIOUS

PDF

70.1 KB Created: 2020-12-18 16:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6180633ccd24febfdfc17d7f7d0a1615 SHA-1: 80e6b442137991c10adc51aca3312a153c76cc97 SHA-256: 5877fe91a1c5b700dee9694057a8708e458b6a200e055f61a5e9ca404c9de181
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to Weebly-hosted PDFs, indicative of a link farm or SEO spam operation. The presence of a critical heuristic firing for 'PDF_SEO_LINK_FARM' and the ML classifier flagging the PDF as malicious strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or traffic-driving scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9668

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=ocean+of+apk+rockstar+games
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/biriwixof_rilotefam.pdf
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/baa3a562335d.pdf
    • https://lexikujufuwu.weebly.com/uploads/1/3/4/6/134613894/60b1f18ef.pdf
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/3165742.pdf
    • https://nudevikitexes.weebly.com/uploads/1/3/4/5/134506517/sojumavinoxakuxokoja.pdf
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/bipip.pdf
    • https://neritakewu.weebly.com/uploads/1/3/1/8/131856632/b103fc0a1501c74.pdf
    • https://kexawugidatenak.weebly.com/uploads/1/3/4/3/134338825/turuloxemono.pdf
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/562633.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/patotale/hokuto_ga_gotoku_trophy_guide.pdf
    • https://s3.amazonaws.com/lanaladu/thanos_putting_stone_in_gauntlet_meme_template.pdf
    • https://s3.amazonaws.com/devuxuzejozam/97627914917.pdf
    • https://uploads.strikinglycdn.com/files/bcb28451-35db-4fb7-bb65-a4330a032a35/hey_onbeli_onbeli_hikayesi.pdf
    • https://s3.amazonaws.com/wiwuxot/tipard_to_word_converter_full_crack.pdf
    • https://uploads.strikinglycdn.com/files/662ca175-8083-4519-9956-b2210fd89d03/16886772715.pdf
    • https://s3.amazonaws.com/wixanarer/challenging_beliefs_worksheet_examples.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8e7.bin
8a46e794569efcb68e5cda22bb81ce5b0bcc06dc98a954576795c7cad7e9d044		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E7 5392 bytes

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