Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e3672408e0e872…

MALICIOUS

PDF

71.7 KB Created: 2021-03-16 02:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f5f19c380683a711affb8433e762a4fd SHA-1: 1569aa8243afb7e9d959dedcf7d5b1baebb39721 SHA-256: 39e3672408e0e872361aa8ce7f4a99e5d46f1417312661be7960d6c264d5094e
186 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV also detecting it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, indicating a link farm or redirection scheme. The embedded content, though heavily obfuscated, suggests an attempt to direct users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/wix?keyword=kilik+soul+eater+gif PDF link annotation
    • http://terugate.mypressonline.com/63196988890.pdfIn PDF document text
    • http://pebonemariv.mypressonline.com/26354497584.pdfIn PDF document text
    • https://jodowofimen.weebly.com/uploads/1/3/5/3/135330599/torefisatusulilex.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/gonitubup.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/jobegobagiwadasoxapiketu.pdfIn PDF document text
    • https://nigizamizu.weebly.com/uploads/1/3/4/3/134319440/jojasusakuve.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/2004_ford_focus_zts_for_sale.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/wolf_of_wall_street_netflix_2020.pdfIn PDF document text
    • http://kijekidajefi.getenjoyment.net/xokisesusavefito.pdfIn PDF document text
    • https://vojawafi.weebly.com/uploads/1/3/1/6/131636668/ad470f37.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/sopakeguvimexakun.pdfIn PDF document text
    • https://tofexozulemun.weebly.com/uploads/1/3/0/9/130969243/2359475.pdfIn PDF document text
    • https://visopitolunew.weebly.com/uploads/1/3/1/4/131483219/xumupapefimis-riwuv.pdfIn PDF document text
    • http://mosuxuvemuzuwex.mywebcommunity.org/23122697728.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/gesulot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_f3abc66da1fa48aebdf00b600c4e2623.pdf?index=trueIn PDF document text
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_956977bd56d4484f80c2b0bc1b40bda2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a94a2af-d423-464a-a083-afb61969af56/conflict_resolution_worksheets_for_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f35b1195-6f99-477a-8535-6418ea7bed17/zogezebijenawaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad59cd2b-924c-4867-ab31-3704e65fbf4e/sundance_optima_850_circulation_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5fdf411-fdab-4dc0-a409-7df19d318bf4/percy_jackson_the_lightning_thief_audiobook_chapter_14.pdfIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_cadd43268ab541059f08f7666b0511b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e87beb-20a1-4555-9225-0a5e75f22b15/dd_way_of_the_four_elements_reborn.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21D 4968 bytes
SHA-256: 55f38b9597cddc735c82c9fdf6ed6fa79839203de238862b1418a816527ee622
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 2044 bytes
SHA-256: e8def34ef7fa1cd1e737aa53281a1ad4be732a20e453453846aa670fb207f4af
font_02_sfnt_off0000ec7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7B 10092 bytes
SHA-256: 22a92dd8a96bb731e35dc831a4bce16f85253403fce6b4e0665027f6a177f6ae

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