Malicious PDF — malware analysis report

Static analysis result for SHA-256 609f65815209036b…

MALICIOUS

PDF

102.2 KB Created: 2020-12-15 12:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b02c1276e4426d608d1bc4a628872f SHA-1: d0d26b65ad9cf00a4ab9bf133ce8c9c98551e522 SHA-256: 609f65815209036b37a8c8037129dcce390fb3311cf5aeabe2bcb4c2564ba9df
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic firing for a link farm, indicating a large number of external links, one of which is to a suspicious domain ('trafffe.ru'). ClamAV also detected it as 'Pdf.Phishing.Trojan'. While no scripts were directly extracted, the PDF structure and the presence of external links suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/strik?utm_term=minimalism+in+postmodern+literature
    • https://cdn-cms.f-static.net/uploads/4420468/normal_5f9abc8399ef7.pdf
    • https://fisezofibidan.weebly.com/uploads/1/3/4/3/134316577/rofifodefenaxo.pdf
    • https://mumujikik.weebly.com/uploads/1/3/4/8/134896301/povazupijafa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://s3.amazonaws.com/muwemivumazulax/54943143413.pdf
    • https://uploads.strikinglycdn.com/files/f0e04895-a950-4695-855d-f72ce8bd6a08/dawiruwitefizurusizapu.pdf
    • https://static1.squarespace.com/static/5fc1d2da12facd59ceb37db7/t/5fc4be3e18e72e5fdb6de303/1606729280141/do_colleges_wait_to_send_rejection_letters.pdf
    • https://static1.squarespace.com/static/5fc557d06609fd0ee7af108f/t/5fd0f78acdc03d44e0a0b945/1607530379042/mcdonalds_breakfast_menu_time_end.pdf
    • https://s3.amazonaws.com/jusuberu/65764672223.pdf
    • https://static1.squarespace.com/static/5fc5386f3dfdd95b60f16c7a/t/5fc76affa038a451bcedba31/1606904575840/race_car_simulator_experience_melbourne.pdf
    • https://s3.amazonaws.com/domegagowevag/hulk_vs_loki_gif.pdf
    • https://s3.amazonaws.com/wavunot/bagasse_tableware_project_report.pdf
    • https://static1.squarespace.com/static/5fc5d654c89e1c4b8fe0815c/t/5fc6a4da4e98326c02fc6acd/1606853855055/4995587082.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
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012adb.bin
dd48b844c8589341349b5fda3cafb46742ced28cebee12b341e3aacedc47a6ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADB 5108 bytes
font_01_sfnt_off00013c1b.bin
4e47a1cfec9eae10c5ef3f9d0a936055406f02ce602d7b15d9f7102e4da8f58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1B 5672 bytes
font_02_sfnt_off00014a28.bin
20ca932312414a9df1f22ee1abeb0386aa507afacf52c65c7b442fd1c3ec5a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A28 11376 bytes
font_03_sfnt_off00016fa0.bin
a44816c76ed8c23a8a29139b183c0a2783553b0d524c1050856c934d38b48839		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FA0 17900 bytes

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