Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae9a84d5f21df87…

MALICIOUS

PDF

89.6 KB Created: 2021-03-25 08:23:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 27e99076257cf3a59ea08b73eef83eee SHA-1: c1203c29a83bb828893a5e97b4d61a20f159f24e SHA-256: eae9a84d5f21df87fe6943d57c7dda500b329f0265fe851e568608bc959ec642
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/wix?keyword=tipi+teepee+wigwam PDF link annotation
    • https://cdn.sqhk.co/lovojekaboxi/ahcoibI/capital_group_american_funds_retirement.pdfIn PDF document text
    • http://wibifowomotab.iblogger.org/pevesupobifepazakamabo.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/ohhaM9Z/levanovolonibanemefosabo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://19eae752-0dc2-40b2-988a-3ead9c543f91.filesusr.com/ugd/dee0a8_01a2f315020f46d5bf554d3135a47be1.pdf?index=trueIn PDF document text
    • http://fekerudosepu.rf.gd/witugurebedupemutavufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9450d05-696e-4e9b-83a4-7eb931b8da79/what_charger_does_ipod_nano_7th_generation_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89661849-791e-4b16-b9e6-b4ced34e815e/how_to_lose_weight_training.pdfIn PDF document text
    • http://xidetikoximu.epizy.com/who_moved_my_cheese_price_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/93556207376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb4f951-01a4-4947-a149-74267ca2efb2/yamaha_dtxplorer_electronic_drum_set_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d037f7-6598-43ce-84e7-cb3866a6c805/38928955197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffde2dd4-b391-4e1d-9aa5-9faf42e4e16a/canon_mx432_how_to_scan_pc.pdfIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_bc6352799fd3456aa9adcdd59996a4ad.pdf?index=trueIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_39704ef9ac0b4188b637c8280118dc2d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gateme/what_is_the_musical_texture_in_a_gregorian_chant.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/bidabupaji.pdfIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_eb0019cf0303477c837e1066ef96fba4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e184b330-fe71-4c19-a886-27c6963f8563/54939940288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57c231e1-a724-4fb8-885b-23b03bb90655/song_of_fire_and_ice_book_6_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46966007-b842-44c7-9656-77e436ff4d55/2320537463.pdfIn PDF document text
    • http://pusevim.epizy.com/old_gulabi_aankhen_song_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ddb5e44-36ee-4a82-87ad-17519e1bac3d/71929434156.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10956 3188 bytes
SHA-256: 09c1c05a6bb7a9d598c20b291b58e95f7449055a487dd13c3878ff15832a2dcb
font_01_sfnt_off00011492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11492 4444 bytes
SHA-256: 482e291564f6a2b5618f2c260e37164eb59a34e95ba2a0af1ae44921bdfd0a82
font_02_sfnt_off000123c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C6 11420 bytes
SHA-256: d4639a6b018c584c6f1408675268ec937cc9b2122568e6b36e99f9e6db4ffccd
font_03_sfnt_off00014a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A2B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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