Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f0c08bbb2b3272…

MALICIOUS

PDF

77.4 KB Created: 2021-03-16 04:19:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a380b5e288af1f23ccf53274a450f98 SHA-1: e19c6375cf6e520af0ddcc9cabdb43a9860741f5 SHA-256: b9f0c08bbb2b327231becaf07f61784652e498733172b1c575cc3d0c019419db
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or SEO poisoning attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of embedded URLs and a 'download button' heuristic further supports a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://lozipotod.ru/wix?keyword=monte+carlo+excel+add+in
    • http://psylath.com/warfighter_exercise_definitionnen8t.pdf
    • http://luminar2-download.xyz/28005688462rzii4.pdf
    • http://dihtyar.online/chemical_engineering_monash_handbookhzvpw.pdf
    • http://chambrehub.xyz/paruwuwitajibusimajafuludt961u.pdf
    • http://baltika-trans.com/24152696703qwow8.pdf
    • http://werenntaq.online/nisuwesakupudunivatefefenou313.pdf
    • http://visiblawty.com/introduction_to_heat_transfer_6th_edition_bergmanwa52b.pdf
    • https://bobiguwifuza.weebly.com/uploads/1/3/5/9/135966914/2592763.pdf
    • http://lnstagram-blue-badge-form.com/how_to_create_a_hard_return_in_an_excel_cellyz8zi.pdf
    • http://axecheat5.xyz/how_to_reset_mr._coffee_clean_cyclex7m3k.pdf
    • https://sujarusokebukok.weebly.com/uploads/1/3/1/4/131437349/fujexatiw_wiwizagijevig_vamug.pdf
    • https://goginaderexikez.weebly.com/uploads/1/3/5/3/135306094/fajidasozenagipug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/59075e50-0569-46f2-9958-f23566dd7055/64575515251.pdf
    • https://uploads.strikinglycdn.com/files/0031c2b1-a131-48ca-9024-561f1856e470/nicholas_sparks_two_by_two_movie_release_date.pdf
    • https://uploads.strikinglycdn.com/files/b73031de-3d1c-4483-abb9-05a1dfbbf105/jaxabolabiliwuwogitonuriz.pdf
    • https://uploads.strikinglycdn.com/files/ce42ba02-7b29-4647-a074-2fbfbeb710c2/3760874979.pdf
    • https://uploads.strikinglycdn.com/files/9b268f3f-3f34-4f82-9e7c-a8fa200a2ac0/vetakijiwojuwavitogef.pdf
    • https://uploads.strikinglycdn.com/files/136eb732-550a-4581-bea7-926c4e7d5270/canon_powershot_sd780_is_price.pdf
    • https://uploads.strikinglycdn.com/files/b3b382ee-8c86-4caa-ad1a-b1bfc7facc78/fozosasenifuwudu.pdf
    • https://uploads.strikinglycdn.com/files/9c74147d-0ce3-41e6-8c34-edcfa5f516b9/why_is_it_important_to_understand_religion.pdf
    • https://uploads.strikinglycdn.com/files/7c8b901f-4800-4c03-8591-c974b3248ae3/the_natural_book_download_in_marathi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f279.bin
2b4833b6e173ce12abf5f8145d5786af1b27ac6decbbb689897301cdf8bc9068		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF279 4828 bytes
font_01_sfnt_off000102fe.bin
55149622ca3bc93931fd99aaef1ad97eba7cb414760a045ce5e97ac496f46cd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FE 10988 bytes

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