Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b3623be714ebff…

MALICIOUS

PDF

69.8 KB Created: 2021-03-30 13:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: f8c2aa828437cf1b0fefb005c9a0e435 SHA-1: 27313b084944423d199e1f47345248d110bf6e14 SHA-256: e2b3623be714ebff03ceec68d1c25831ae58694b628a8d6bf3720e7abfee18f4
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous external URLs, suggesting it functions as a link farm designed to redirect users to potentially malicious sites. The presence of embedded JavaScript, though not explicitly detailed in the provided evidence, is a common technique for exploiting PDF vulnerabilities or initiating further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/wix?keyword=sonic+adventure+apk+gamejolt PDF link annotation
    • https://cdn.sqhk.co/gawagunikuw/bibyjep/ivory_wedding_dress_what_color_shoes.pdfIn PDF document text
    • https://murimuwisoruda.weebly.com/uploads/1/3/4/0/134017177/padabewepometinezig.pdfIn PDF document text
    • http://adv-workshop.site/bush_usb_bluetooth_turntable_-_whitew060n.pdfIn PDF document text
    • https://zewakutij.weebly.com/uploads/1/3/5/3/135327761/ketidorebujer-misufe-nukemenekaz-janitakiluvedot.pdfIn PDF document text
    • https://rowegodidevonu.weebly.com/uploads/1/3/4/4/134468430/gilemukige-bojefiligut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453908/normal_5ff1d0748beb8.pdfIn PDF document text
    • https://cdn.sqhk.co/numisezopo/iQgjeih/3973477766.pdfIn PDF document text
    • https://xalorato.weebly.com/uploads/1/3/4/3/134317389/8ef136c.pdfIn PDF document text
    • http://dontbeshy.xyz/cakephp_3_tutorialb0gja.pdfIn PDF document text
    • http://upsbox.ru/14110896955ztbp4.pdfIn PDF document text
    • http://visiblawty.com/to_prepare_a_pro-forma_income_statement_information_is_pulled_from3lkgw.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/jigMuMo/learn_how_to_learn_anything_faster_udemy.pdfIn PDF document text
    • http://hotita.fun/sfv_patch_noteswnzvx.pdfIn PDF document text
    • https://xoxulesajoxe.weebly.com/uploads/1/3/1/4/131438427/9770511.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371788/normal_5ff183e555cba.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/biijdlm/75886299638.pdfIn PDF document text
    • http://itdiscounts.pro/sharp_1.1_cu._ft._over-the-range_convection_microwave_oven_r1881lsyge0jk.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/PjgGfST/city_train_driving_simulator_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454995/normal_602b386be2180.pdfIn PDF document text
    • http://itanto.space/samsung_m283x_driverjxz2v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 5516 bytes
SHA-256: b2944a8770b25f54ffb1d3d27ab02860bc010a3a5c710d6107b1a6681b4242d1
font_01_sfnt_off0000e603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE603 10504 bytes
SHA-256: 3a70d11baf8621d635ed398018308827631ca73bc97b135d36b7019da23bd300

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