Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d356dd12c12350…

MALICIOUS

PDF

85.3 KB Created: 2021-03-16 16:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5edada89ea439918d397f442a0a86b0 SHA-1: bb567bc6b48fd3d71a38d0185851386850d79a59 SHA-256: 05d356dd12c12350cf8f3d52c962416c757ff91442bd141b28acf018637892d4
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains a large number of external links, suggesting it functions as a link farm to distribute malicious content or conduct phishing attacks. While no scripts were explicitly extracted, the presence of numerous external URIs points towards an attempt to redirect the user to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://nipisod.ru/strik?utm_term=beseler+23c+ii+dichro+colorhead
    • https://cdn-cms.f-static.net/uploads/4386609/normal_603cfb360fb0f.pdf
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5fcf3bc08ebe0.pdf
    • http://fbcopyright-center.com/best_scorer_champions_league_2020umhja.pdf
    • http://thelandofbadideas.com/missing_money_njhkjrb.pdf
    • http://tonerinkstore.com/16588468650241i1.pdf
    • https://static.s123-cdn-static.com/uploads/4413239/normal_5fc65465edd61.pdf
    • https://vigedinolig.weebly.com/uploads/1/3/1/3/131380992/janujezeribuz-forubawugobabi-bukaf-pibirobuxos.pdf
    • https://josazosanika.weebly.com/uploads/1/3/4/3/134339908/9e9c1375.pdf
    • http://fakosujonipej.iblogger.org/black_and_decker_car_battery_charger_home_depot.pdf
    • http://recepty-dd.info/reset_toner_counter_brother_hl-3170cdwhm6hj.pdf
    • https://static.s123-cdn-static.com/uploads/4379489/normal_5ff5c1eaae11d.pdf
    • https://kovorugoza.weebly.com/uploads/1/3/1/3/131383314/lalilep-vazuwumiju-tonire.pdf
    • https://cdn-cms.f-static.net/uploads/4473622/normal_5fe805037ff46.pdf
    • https://static.s123-cdn-static.com/uploads/4369334/normal_5fcd432ae423f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xamazaxalezamat.rf.gd/fishing_report_texas_city_dyke.pdf
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_b562effa1f1b4c8d99e8f75512a75ff9.pdf?index=true
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_d9c7dab4d62349339d2ada95244116b8.pdf?index=true
    • https://99f4a897-b223-4833-863a-50ad465ba5d5.filesusr.com/ugd/8e2371_cbb243880b274f7697482a9a41e9b2b5.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f88e.bin
814221569d2f96b2f0607857473e979f663134f9e6496b66db3cafcfbdc625f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF88E 5372 bytes
font_01_sfnt_off00010ac2.bin
54b8898ded910b5e1a58cae816f2fa7e32c92edc1a0a25f2b0c871fe88be511b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC2 11772 bytes
font_02_sfnt_off00013290.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13290 16204 bytes

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