Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c005032424eb4d…

MALICIOUS

PDF

86.6 KB Created: 2021-03-13 17:16:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 015e7a0614f29044c5ff8943e345bb1d SHA-1: 39b9c3a3304102e2bdf196cf0791e4fc222651af SHA-256: e2c005032424eb4d22fddeba3f16ea001fa7ce2987dfd09ec63b61ccdebdad02
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, and contains numerous external links. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of the document being used to drive traffic to potentially malicious or spam-related websites. The embedded URLs suggest an attempt to redirect users to external content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=christmas+carol+audiobook+length PDF link annotation
    • https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/1803953.pdfIn PDF document text
    • https://fofebufog.weebly.com/uploads/1/3/4/7/134738758/zavivozoziluxa.pdfIn PDF document text
    • https://novenoberube.weebly.com/uploads/1/3/0/7/130776641/vuvadebux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471250/normal_600b8e94e8bc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_60370fea0fbb0.pdfIn PDF document text
    • http://kimiter.medianewsonline.com/jodasagokunaxeradurak.pdfIn PDF document text
    • https://cdn.sqhk.co/lotidonita/sxAdibc/pocket_claw_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469358/normal_603125aa0731a.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/22486692058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410678/normal_603f65fc2e6fd.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxarulenogu/pjawigt/zijafati.pdfIn PDF document text
    • http://poposiruta.mywebcommunity.org/kaxotegowaduz.pdfIn PDF document text
    • https://setunifajufin.weebly.com/uploads/1/3/5/9/135989633/nabirabejofewaxigise.pdfIn PDF document text
    • https://venolebibu.weebly.com/uploads/1/3/5/3/135348563/rofukebalog-reboxoxexuxuge-mojan-vabufafukupepo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476002/normal_5fe81c4c7f914.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/wicYTjf/cable_size_calculator_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/imax_b6_digital_rc_lipo_nimh_battery_balance_charger_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daec368d-2f1b-444d-a38e-be4d92894d75/1826224374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3437e75e-bbc0-4133-9ad6-f930f7a23468/does_it_snow_in_washington_state_in_december.pdfIn PDF document text
    • http://xobebol.onlinewebshop.net/pajezejaxiwof.pdfIn PDF document text
    • http://nugafafekovad.epizy.com/50516316256.pdfIn PDF document text
    • http://muwojes.epizy.com/nofasajatelixowibir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8d2e860-2c1d-417c-a3ef-0cfc9763a3b3/27463404251.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4C 5464 bytes
SHA-256: 1a73673f861d7c2993a65869d19e073b7486e565a33f4d7f668d1de47734b989
font_01_sfnt_off000110a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A1 11772 bytes
SHA-256: 5427e83480e6f69cf7b8230ac3536c0d0e73695a486f283fcd0e2f4fafbe45c0
font_02_sfnt_off00013793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13793 16112 bytes
SHA-256: a258921ab7dae287e23372de6243156f01d5b2425b048f102cb136065be1f569