Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c829432a2e70187…

MALICIOUS

PDF

82.7 KB Created: 2020-11-11 14:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b95e7f25b50dcd64d33d3a28a015347e SHA-1: e4b3ce2da2c5406c5d55fc5ee8bebce6cf059a10 SHA-256: 6c829432a2e70187badc37b7f402226a4b08beca49e6ee60e4d8e7c2783777b9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://trafftec.ru/strik?utm_term=avs+camera+software', suggests a lure related to camera software. While no scripts were explicitly extracted, the PDF structure and the high ML and ClamAV scores indicate malicious intent, likely phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=avs+camera+software
    • https://cdn-cms.f-static.net/uploads/4470837/normal_5fa3d8833e1ac.pdf
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5fa97450e225c.pdf
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/zusarel.pdf
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdf
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5f8a7f43c9838.pdf
    • https://zinawadasug.weebly.com/uploads/1/3/4/3/134312837/xinamibi_lodepiruwopole_pagalabigi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/degagaziv/lumino_city_guide.pdf
    • https://s3.amazonaws.com/belopudevuzuza/28894476512.pdf
    • https://s3.amazonaws.com/rixevozajixezos/vuwagoxunewetosux.pdf
    • https://s3.amazonaws.com/kavugusepe/visifekamoxegazawepisadax.pdf
    • https://s3.amazonaws.com/ronatiduzoxij/the_lighthouse_blu_ray_nz.pdf
    • https://s3.amazonaws.com/leguvefu/betamutipi.pdf
    • https://s3.amazonaws.com/tabobujimo/nalc_national_convention_2020_hawaii.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001028f.bin
fe35b598825d59d0ffff1346b8797316f4184e09d79d171959e01f93d6700950		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1028F 25772 bytes
font_00_sfnt_off0000ca8c.bin
71a4842803246d3453c0b199682f7652dd77a559bdeea6183f75b3f750348814		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8C 4772 bytes
font_01_sfnt_off0000dac6.bin
1f06179d3149fd321a541a25853e19a7a3391ed91e8a06e460ffea21e513b4e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 11536 bytes
font_03_sfnt_off00012fd0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FD0 4324 bytes

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