Malicious PDF — malware analysis report

Static analysis result for SHA-256 7619e4695ab7eb3f…

MALICIOUS

PDF

78.9 KB Created: 2021-05-01 23:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be36d09cdc5773b420ecba9e91af5f8b SHA-1: dc8ab1001382fd85f6271822cf3e7794accd3aab SHA-256: 7619e4695ab7eb3f8e80867ac815fa9fbff7f7b3512207e1a8a45f94b564fe45
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or distributing malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature, flagging it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to lead users to compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/strik?utm_term=how+do+i+setup+my+canon+mx490+wireless+printer
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/4995084.pdf
    • https://vonosupaxeme.weebly.com/uploads/1/3/0/7/130740497/bigubusow.pdf
    • https://lasasozizo.weebly.com/uploads/1/3/4/0/134041343/rexodenobobupoxiso.pdf
    • https://gosasomaf.weebly.com/uploads/1/3/4/3/134370397/2401581.pdf
    • https://jilibawijoza.weebly.com/uploads/1/3/4/3/134363321/ribor.pdf
    • https://fajorisovobune.weebly.com/uploads/1/3/4/7/134752278/baveboremigunu_sanesoruneg_lavusulizulen_judemimopuxex.pdf
    • https://cdn.sqhk.co/zejizoguzut/hhLvt4V/sakiratifos.pdf
    • https://cdn.sqhk.co/nakolore/hl2bAhe/pulse_rate_vs_heart_rate.pdf
    • https://rodelifefi.weebly.com/uploads/1/3/0/7/130776661/jezukaluniwozidiwuw.pdf
    • https://norigawe.weebly.com/uploads/1/3/3/9/133988483/tokemodog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wazorixekunafob/78234412132.pdf
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_b59e60fe932142efb7524c5ef592d10e.pdf?index=true
    • https://30de3caf-c510-4ce9-8691-b8280dc60d9b.filesusr.com/ugd/4980ee_80f4044bf05340fb9201cbe13919fe3c.pdf?index=true
    • https://17851959-1482-4b49-8222-7b7b0c628459.filesusr.com/ugd/3cb679_d0e39decce904d3085672ad9efc341bf.pdf?index=true
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_e02435a6ef7d49428cdac108d3b47f76.pdf?index=true
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_eb91fabfa3c142859ce0a370a628c894.pdf?index=true
    • https://5c2cca0d-3a4e-48b0-93bf-8ac6c0c026cb.filesusr.com/ugd/271e65_7eaab00958d249f9a3b504896611cbbb.pdf?index=true
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_f0cc6715efa240368156b0e946a68047.pdf?index=true
    • https://s3.amazonaws.com/fajeloninesitel/xagibe.pdf
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_a76140529f94455c8cf632bdae290d9d.pdf?index=true
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_acc680beccd846c38f83b3cc24f57270.pdf?index=true
    • 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_off0000f678.bin
b5a474f7f972d8d9b81910958116e2b10075471f8d05f66960a0a5276974bcf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF678 5828 bytes
font_01_sfnt_off00010a57.bin
4728e421277b00b8a98ea9dd125a513a805a73004e8cd5b4ed2f94a54b42cf82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A57 10464 bytes

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