Malicious PDF — malware analysis report

Static analysis result for SHA-256 324166ec7cac8893…

MALICIOUS

PDF

69.5 KB Created: 2021-03-16 09:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2aa22316fc1b424051b444087f2a61e SHA-1: c3098ae0a6e545b606b261723014b45442bb6e25 SHA-256: 324166ec7cac8893d856445e4627b3a0c2d308cb63ad6743b458bbb635ac6724
212 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying a malicious redirector link to 'yafferge.ru'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to obscure malicious activity or engage in SEO manipulation for phishing. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7004

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/award?keyword=axis+bank+debit+card+charges+pdf
    • https://sonojija.weebly.com/uploads/1/3/4/7/134723635/970ba3fdd46b.pdf
    • https://jewepixixa.weebly.com/uploads/1/3/0/8/130814248/gojepufovolokefon.pdf
    • https://falumegobe.weebly.com/uploads/1/3/4/7/134702986/podujafijosifenosufi.pdf
    • https://xuxijoma.weebly.com/uploads/1/3/3/9/133997678/4454974.pdf
    • http://coins24h.com/17187546985xard9.pdf
    • http://shtancircul.site/pevebizosepofuraridetoxi8uq9c.pdf
    • http://wusokamojifel.scienceontheweb.net/90449814824.pdf
    • https://vosanuxavuzom.weebly.com/uploads/1/3/6/0/136089669/rasokada.pdf
    • http://mmmuuuue.space/vamubolodetiqawbn.pdf
    • http://avtoshkola-region26.ru/husqvarna_sewing_machines_partstwflm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/85fb2d06-71dd-4570-815b-9cf1343dd45a/harley_davidson_touring_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/0b025c57-c1f6-4b9a-8aa5-00d2a5f3325d/vobapuduxewofome.pdf
    • https://s3.amazonaws.com/zuxime/does_home_depot_transfer_employees.pdf
    • https://uploads.strikinglycdn.com/files/13dc1603-fb81-415d-926b-486325adc77d/45571848023.pdf
    • https://uploads.strikinglycdn.com/files/543bff71-f59c-4273-bbd8-10be4be1eb15/98472160002.pdf
    • https://uploads.strikinglycdn.com/files/30c8e065-b010-4aed-944d-b9ebf609944d/tipos_de_planes_estrategicos_y_operacionales.pdf
    • https://uploads.strikinglycdn.com/files/6686ab65-f7b9-42cb-b319-6424deb5f2e7/abu_garcia_ambassadeur_5000_line_capacity.pdf
    • http://rodexiguv.onlinewebshop.net/sulabudit.pdf
    • https://s3.amazonaws.com/jesidofefe/gilumusodajazukanamova.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/genetic_recombination_multiple_choice_questions_and_answers.pdf
    • https://s3.amazonaws.com/savifin/beaver_lake_fishing_report_washington.pdf
    • https://uploads.strikinglycdn.com/files/11ca1b8b-c658-4b3e-981d-1827c5820bfe/74572985452.pdf
    • https://s3.amazonaws.com/zulezov/13870813769.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e613.bin
9a3e898ac2caccc09549f15a3c82b4a661b25176ca612ca1ca5d5c4897035516
pdf-font-stream PDF embedded font (sfnt) at offset 0xE613 5648 bytes