Malicious PDF — malware analysis report

Static analysis result for SHA-256 808e2e329a2dd7bd…

MALICIOUS

PDF

77.4 KB Created: 2021-03-19 16:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cf88ad4720729fdc5db49ec91c02347a SHA-1: a6a21867788a8d16950e9dfcdae19b16a194be0e SHA-256: 808e2e329a2dd7bd6c048889ffb6bc462f47699f132e9ae89d16c6a245a38a97
186 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 high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to 'Julius Caesar'. No scripts were extracted, but the PDF structure and numerous external links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=julius+caesar+play+cast+list PDF link annotation
    • https://cdn.sqhk.co/manaruparil/kQwyjgV/crowded_color_synonym.pdfIn PDF document text
    • https://nojonepidafajik.weebly.com/uploads/1/3/0/7/130775859/kunatev.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/gfhbmjd/66048189455.pdfIn PDF document text
    • https://feniwimaregodin.weebly.com/uploads/1/3/5/9/135993969/ginakuvipozizev_gukewagomuveziv_xefuru_vepol.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/jetidZp/77305659762.pdfIn PDF document text
    • http://nuviteb.22web.org/ultimate_mechanical_keyboard_keycap_replacement_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/gicjggh/food_truck_restaurant_kitchen_chef_cooking_game_download.pdfIn PDF document text
    • https://punizino.weebly.com/uploads/1/3/4/3/134327780/juvaduro.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/ehcrmij/lock_screen_mac_shortcut.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/xRiihaj/redonabejuv.pdfIn PDF document text
    • https://zoluwapipapak.weebly.com/uploads/1/3/5/3/135321816/kojiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/wesuwajil/A5C2igD/demonstrated_effective_communication_and_interpersonal_skills_in_nursing.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/gcNmjjf/vexefan.pdfIn PDF document text
    • http://zibitivijog.22web.org/what_does_dia_mean_in_greek.pdfIn PDF document text
    • https://cdn.sqhk.co/xoresarib/cFHBvfr/3245961807.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/Fjfjjp7/tarafivugabekilulaso.pdfIn PDF document text
    • https://dubelaxelafef.weebly.com/uploads/1/3/1/1/131164372/ketonasasavu_fesif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://276658a2-c6b1-4a23-bc3b-56c82bce4278.filesusr.com/ugd/f9448a_9037f2c9c22149f48995bded37d53763.pdf?index=trueIn PDF document text
    • http://jadogog.epizy.com/99029979215.pdfIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_4c8435a709554455aab8b32bac80ea75.pdf?index=trueIn PDF document text
    • http://bedevekozazabe.rf.gd/42490865234.pdfIn PDF document text
    • http://gobipumedijesi.epizy.com/56284870898.pdfIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_0b43a292369645009e4e9b20036baa0a.pdf?index=trueIn PDF document text
    • http://madukavinoxonal.epizy.com/fubijekuwikezobup.pdfIn PDF document text
    • https://03df74f7-894d-4c84-999e-da2b33eb06f5.filesusr.com/ugd/4c7733_2dde9041a3f4450b9fe77779427d4026.pdf?index=trueIn PDF document text
    • http://vulitogegitutop.rf.gd/bhutanese_song_2018.pdfIn PDF document text
    • http://ruredat.rf.gd/become_a_tour_guide_abroad.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF354 5016 bytes
SHA-256: b33acc8a6b3362f22806b8e9386f396ad42286132fe39faf38debce3b2c71b17
font_01_sfnt_off0001047f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047F 10772 bytes
SHA-256: cb48fac74e66bfd360db4fd1b0e4886254dbb026459d3d96b5a59b2642f20a9c

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