Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f02206ec5299bef…

MALICIOUS

PDF

75.3 KB Created: 2020-12-04 13:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa888ab63c4f465922dbef58491afe91 SHA-1: 1e60a77b886e7e0b6dcf33face0e869490fcdc99 SHA-256: 0f02206ec5299bef711c9f1953d65194f574cca48e4a0001945f4c3d7bc9f51d
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a significant number of external links, many of which are likely part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing or trojan distribution. The embedded JavaScript is likely used to facilitate the redirection or execution of malicious content from these external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://traffine.ru/aws?utm_term=bootstrap+template+example+with+code
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/wesenazegivakap-wopufavik-kabexuteda.pdf
    • https://vomujozirokino.weebly.com/uploads/1/3/4/3/134318601/zaronekuzon-lulunogegof-fidojonewonakaw.pdf
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8577010.pdf
    • https://static.s123-cdn-static.com/uploads/4501482/normal_5fc647b2d967e.pdf
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/zomedizelafesaripo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf839edabee7b4406fae0/1606219835649/punjabi_radio_usa_app.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe09b961e25426e1000f29/1606289849960/sorakigagupetor.pdf
    • https://s3.amazonaws.com/legenapi/ruregagamanijibapajivaz.pdf
    • https://s3.amazonaws.com/lejivugeleguwod/rudolf_steiner_lucifer_y_ahriman.pdf
    • https://static1.squarespace.com/static/5fc0ed012e537a05ef0936a0/t/5fc0f6b3e18c5c478e1e7bf1/1606481588276/ptz_camera_system_installation_diagram.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf609fcb3e0f5771471c90/1606377656837/tenafene.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e90173fb5383b98b8f5/1606373008902/12242970402.pdf
    • https://s3.amazonaws.com/resixexi/80731308443.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_off0000ec0b.bin
0dc6f3517d1440d6a47c28cd93ffa4442101cb1d7a19050e75c0d08b8e1c257e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0B 5520 bytes
font_01_sfnt_off0000febd.bin
2c3befaadecbd836940ecc8afeebdd3c95bb0a1933bb2f7a3f343f3681fb96c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBD 10032 bytes

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