Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e376164e4248d21…

MALICIOUS

PDF

84.8 KB Created: 2021-03-20 09:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 29375e625aaee0cedfbf862985f73ed8 SHA-1: 439e20a0246deb9446ac8f8e1b0f7ba7511c4595 SHA-256: 1e376164e4248d216263a7e24eaee9b4882067a770d6777969f7b9c116eeced3
126 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a URL that offers 'quickbooks enterprise 2017 crack'. The ML classifier and ClamAV also flagged this PDF as malicious, specifically as a phishing trojan. The embedded URL is the primary indicator of malicious intent, suggesting a lure for software piracy that likely leads to malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=quickbooks+enterprise+2017+crack PDF link annotation
    • https://cdn.sqhk.co/nesadatifu/dsjd1rZ/best_ninja_air_fryer_recipes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486565/normal_5fe8fd4bd53f2.pdfIn PDF document text
    • https://fivepixulata.weebly.com/uploads/1/3/4/7/134747110/davibubiwek_galakezozarum_jinebosevum_xadedok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_5fda7a7ea3abb.pdfIn PDF document text
    • https://gokivasinu.weebly.com/uploads/1/3/4/3/134334496/1293341.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/how_to_prove_congruence.pdfIn PDF document text
    • https://cdn.sqhk.co/vidujubotaf/aMhiPhg/33015126482.pdfIn PDF document text
    • http://nerazegizetikam.getenjoyment.net/80637440838.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/5805697.pdfIn PDF document text
    • https://patapirebitogi.weebly.com/uploads/1/3/0/8/130814085/lenakikenomara_kirexenaruz.pdfIn PDF document text
    • https://vowawekalumuz.weebly.com/uploads/1/3/5/3/135304311/8acb8b82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476301/normal_5fcbcb085b8b5.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://uploads.strikinglycdn.com/files/1188d017-1d89-44ed-ab58-37ee90519e1c/jaxepuxo.pdfIn PDF document text
    • http://nigagemi.rf.gd/candy_crush_game_free_for_computer.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/sijalagozozeduxagad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/930a3b3f-779d-4fea-b107-e6d265190e5b/how_does_stephen_hawking_talking_machine_work.pdfIn PDF document text
    • http://pakilapawunafep.epizy.com/76711506153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03b62cbc-d180-4845-93f7-1c77f6488e01/violence_quotes_in_the_chocolate_war.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/073413ca-b1cf-420e-b743-f8e33780b3ff/tetamexuxuni.pdfIn PDF document text
    • http://wujagenak.atwebpages.com/words_to_describe_sunset_air_quality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a2dce2-bc9c-46ff-b341-fcdbcfa02a4b/85936678368.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_off0000ffa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA1 5448 bytes
SHA-256: 2c800638e1ad375c75a991cd66dcc11f91bd6cf0daef014069193ffc30709d91
font_01_sfnt_off00011231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11231 10980 bytes
SHA-256: 5673d5443cb44a9502b3d8e4649af7a7991ef9297e121490dcf99099bdf96612
font_02_sfnt_off00013786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13786 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3