Malicious PDF — malware analysis report

Static analysis result for SHA-256 995b904de44c124f…

MALICIOUS

PDF

84.9 KB Created: 2021-03-24 13:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: afc18b12384c068386fa3b7949af1303 SHA-1: 0e44d0a9dcf4ff2c94353d37c94e074b44994654 SHA-256: 995b904de44c124f997b250ffb665226ad251d0133151ad3d61398036e858167
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are hosted on disposable domains, indicating a link farm designed to distribute potentially unwanted or malicious content. The presence of a 'download' lure and the detection by ClamAV as 'Pdf.Phishing.Trojan' strongly suggest a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=gta+5+game+apk+and+data+download+for+android PDF link annotation
    • http://medyahanem.com/pepegitinay2vdw.pdfIn PDF document text
    • http://ekzo-fruit.ru/swann_security_camera_systems_for_salekne2r.pdfIn PDF document text
    • http://makedctl.site/porogejewubugagiguvewogea6hu.pdfIn PDF document text
    • http://zebinoleruf.iblogger.org/washington_state_employees_credit_union_online_banking.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bikutuvuxaxixo.epizy.com/bakugan_battle_brawlers_nintendo_ds_game.pdfIn PDF document text
    • https://aca292c6-a3ee-4c96-b4c9-db15c8eca1b9.filesusr.com/ugd/cd1d52_726d9e94c6994a7eb0113be90ab4540b.pdf?index=trueIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_c28d0983449746a6a7de79e35045695b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84beddb4-a7ba-4baa-a2ac-16d488052068/remington_870_express_tactical_combo.pdfIn PDF document text
    • http://bomajada.epizy.com/xoxat.pdfIn PDF document text
    • https://dc383e6d-b7a3-4e67-a88a-227fa542b6c3.filesusr.com/ugd/72b0e7_6966bdadc56f42fca673abbd69ab3dba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f873f9fd-6595-46fa-a835-8f34c4eefa66/who_do_i_call_to_fix_my_dishwasher.pdfIn PDF document text
    • http://toxisokipefofo.epizy.com/raid_shadow_legends_guide_first_champion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ffd44a-1966-42f1-b798-83070d2d764d/10_steps_of_service_in_a_restaurant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5678e6ff-da4d-4dde-a363-6248a7a9dd4c/hassles_and_uplifts_scale_scoring.pdfIn PDF document text
    • http://lelefabopotudox.rf.gd/85202413455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832ce33f-00e7-448a-b776-3045a616bcd9/the_birds_work_for_the_bourgeoisie_tiktok_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588666ae-7601-41b4-a16e-993a0e746792/63983582840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f93a7d-956b-4d90-84db-be5b5699b204/why_is_my_battery_blinking_red.pdfIn PDF document text
    • http://jodudakafogav.rf.gd/noco_genius_g7200_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52bd9f26-2aba-49ce-9897-354f27ee80d5/greek_mythology_demeter_and_persephone.pdfIn PDF document text
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_d2fff33477464ab3bc8e3b61c97d5586.pdf?index=trueIn 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_off00010354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10354 5492 bytes
SHA-256: d369892c00efae8c1f49827fa9455d26965bf8bd862184861b77b6f4a7f77bb7
font_01_sfnt_off0001160b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1160B 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00011e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E99 11420 bytes
SHA-256: f116aa48124318e90a99cd15b6b3dffe20e28e8b6802f914541b6db4efdf7b29

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