Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cbb5272b8d8a7e7…

MALICIOUS

PDF

74.2 KB Created: 2021-03-16 21:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f307816e8e3ffe209a814b27dff0933b SHA-1: 9433be07e8d9137ac73b47268433c8be2fcedc26 SHA-256: 1cbb5272b8d8a7e7d9587582dd18007bf159ea29c5ba1e90870d907b70580f2f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a suspicious domain that appears to be a lure for a 'member access portal'. Heuristics indicate a link farm and ClamAV detection confirms it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://lozipotod.ru/wix?keyword=mygamervault+member+access+portal
    • http://vonexalux.sportsontheweb.net/house_rental_agreement_form.pdf
    • https://jisixeda.weebly.com/uploads/1/3/1/4/131409884/sedobopikufumagim.pdf
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/bojeronajuw.pdf
    • http://jasazotinalol.mygamesonline.org/deenbandhu_biogas_plant.pdf
    • http://xutexukoxobofi.mywebcommunity.org/epson_v370_photo_scan_slides.pdf
    • http://kuliwegi.sportsontheweb.net/are_flowers_haploid_or_diploid.pdf
    • http://gakawisogafuga.mygamesonline.org/desagiraraxe.pdf
    • http://xoziduso.mypressonline.com/54156797040.pdf
    • http://kulotufiw.mypressonline.com/bazovosesujakapiloxebi.pdf
    • http://texoraw.sportsontheweb.net/43743775039.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_890f04f2df1f4f05819adc68e1826b7f.pdf?index=true
    • https://s3.amazonaws.com/vipinib/cbse_grade_11_english_textbook.pdf
    • https://s3.amazonaws.com/wifukedot/75483862773.pdf
    • https://s3.amazonaws.com/vibuvomomuv/sefatanezomuvepipipar.pdf
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_0197bbd22a7442b59cd140867ea25b48.pdf?index=true
    • http://zisukuvi.atwebpages.com/kidde_smoke_and_carbon_monoxide_alarm_battery_operated.pdf
    • https://s3.amazonaws.com/farokof/honda_gcv160_carburetor_repair.pdf
    • https://s3.amazonaws.com/gotenukevepunin/27377903852.pdf
    • https://s3.amazonaws.com/jalasilunaz/70777947633.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_off0000e27a.bin
a6afb773138a941e9ba34a810741aabf625eb05731fd5b8f02726b2d0ef3c4e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE27A 5560 bytes
font_01_sfnt_off0000f567.bin
e17782f12c3abc60317f382a2f48060a7c1ecf9b6625fe215e5588b3e1d543fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF567 11240 bytes

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