Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee36e7d508cc216e…

MALICIOUS

PDF

88.1 KB Created: 2021-03-31 10:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 147577ad0faca9b7dc387afb7c7990bf SHA-1: 2dea6560efb9f7e88e3bc8c10f8e9685542d6523 SHA-256: ee36e7d508cc216efc3e9e1763fad31fe18ec47773b962009883d34d3dec2b02
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malicious link farm attack pattern. It contains numerous external links, including one to `https://lozipotod.ru/123?utm_term=beer+bottle+label+template+free`, disguised as a free template. The presence of many external links suggests an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/123?utm_term=beer+bottle+label+template+free
    • http://mukinumatonewo.getenjoyment.net/azar_english_grammar_ppt.pdf
    • https://zumikifekov.weebly.com/uploads/1/3/0/8/130813997/wigibatopemin_gevutogelozi.pdf
    • https://static.s123-cdn-static.com/uploads/4454422/normal_6004ddc384c13.pdf
    • https://cdn-cms.f-static.net/uploads/4484631/normal_604e23df706d2.pdf
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5fd0e25f0873f.pdf
    • https://cdn-cms.f-static.net/uploads/4479688/normal_605bc658bb4f3.pdf
    • https://dodesigaf.weebly.com/uploads/1/3/4/6/134656612/d588cf2766.pdf
    • http://sufawevugut.mywebcommunity.org/33897959662.pdf
    • http://detijiwajak.22web.org/black_body_radiation_notes.pdf
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/mawojivuwewok.pdf
    • https://cdn-cms.f-static.net/uploads/4408483/normal_6043ed2b166e7.pdf
    • http://poruzotosiku.getenjoyment.net/46907811615.pdf
    • http://rezanufeku.mygamesonline.org/14885382399.pdf
    • http://gasurorir.sportsontheweb.net/14969284001.pdf
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/7686012.pdf
    • http://bixaxivajujojar.mypressonline.com/jepez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_8e14e1111a4d4e7280156e55a1ae818d.pdf?index=true
    • http://dunugamufaj.epizy.com/zifexituwoboxag.pdf
    • http://muwufonum.epizy.com/rijatifefewuluxirez.pdf
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_584ffa7352b04e87a3a6bb817c4f2c8b.pdf?index=true
    • http://totajenu.epizy.com/student_letter_of_recommendation_template.pdf
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_068214338d7148edb85bf517d426de3a.pdf?index=true
    • https://298c7861-702e-4dad-8e6b-798164301c36.filesusr.com/ugd/98adb1_3c8e578dad024dcf88b9198fa379fb52.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f05.bin
75722105dbf1f84f352e52ffce1a1ee354039cba4e1c43108c0372e925baa665
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F05 4692 bytes
font_01_sfnt_off00011ef4.bin
2950d0779d15ce9674086debf34ec4bc6637b876dac16ae3084fed34495e74df
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF4 11336 bytes
font_02_sfnt_off000144df.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x144DF 4324 bytes