Malicious PDF — malware analysis report

Static analysis result for SHA-256 697550c9ee8d5868…

MALICIOUS

PDF

83.7 KB Created: 2020-11-11 23:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb748579cab0648ce0f5e5e90c6a1898 SHA-1: 5a1479f7fb176edf45f7b5b2e4bcf2e5efa35860 SHA-256: 697550c9ee8d58683ee0e945adb40ae56953e0c84c424b2d225e7e2d121b14dc
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector infrastructure and a link farm, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly suggest malicious intent, likely to redirect users to malicious websites. The ML classifier and ClamAV detection further corroborate the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://traffmen.ru/strik?utm_term=levis+sizing+guide
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f8bf9d733495.pdf
    • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/97aeb2c7132.pdf
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/kidebuwa.pdf
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/0f6314c9aeca.pdf
    • https://lajawenofuki.weebly.com/uploads/1/3/4/5/134501859/0ced44533ff39.pdf
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f9575cecc33e.pdf
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/694840.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f6f9ef60-3e1e-4f2d-ad2e-03a6f7d7a2ad/jipoduwirevusakego.pdf
    • https://uploads.strikinglycdn.com/files/aa772842-6257-4c8c-8215-e5ce0d7b5b6f/pathfinder_mythic_deadly_aim.pdf
    • https://s3.amazonaws.com/felasorarabipis/regevizin.pdf
    • https://uploads.strikinglycdn.com/files/26d941d5-4917-42d2-a3d6-cf6ddede5eb1/barinuzinonozitokav.pdf
    • https://uploads.strikinglycdn.com/files/035232e1-0836-4ca9-a89b-c499dcf2a679/v_is_for_vampire_oxford.pdf
    • https://s3.amazonaws.com/xakapudakadu/23802472660.pdf
    • https://s3.amazonaws.com/wixanarer/bd_all_romantic_natok.pdf
    • https://uploads.strikinglycdn.com/files/d84d48dc-05ff-43db-8bb3-e73d8bc3c201/rulixin.pdf
    • https://uploads.strikinglycdn.com/files/58145504-eb13-4e9e-909c-2f0dc5ee54a1/luther_starts_the_reformation_answers.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f1a4.bin
b8d4d7ac2ad6f6712ae1c8262f2bf8519e307ffe29bd17b72e6b6a3fab36c71e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF1A4 16036 bytes
font_00_sfnt_off0000e182.bin
29623ee98f444f252ca63c53834217e026dd620e5ae48fe57ad5a6b041b58344		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE182 4704 bytes
font_02_sfnt_off00011e00.bin
27a503697205a52e980be910275ac8c6703f35159e072fb1b549c22fa3fd0672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E00 10380 bytes

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