Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d2f0dfee99956f…

MALICIOUS

PDF

77.8 KB Created: 2021-04-29 12:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b9f7ea915cbbb609a825d1b827f16b6c SHA-1: dc8f8c830a8efb0516fa261963a2cd853e289464 SHA-256: 62d2f0dfee99956f7cf09d91b70d6d22cce9f4c9153f410cdfd31f295a124811
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URIs pointing to external domains, specifically 'xezojetit.ru' and 'genoray.pro', which are likely used to host phishing content or download further malicious payloads. The presence of these links suggests an attempt to direct users to malicious sites, aligning with spearphishing tactics.

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://xezojetit.ru/strik?utm_term=what+is+a+plc+programmer PDF link annotation
    • http://genoray.pro/mufovyoakm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496582/normal_5ffdd74284553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_603833af6432b.pdfIn PDF document text
    • http://easterthjg.com/jungle_fly_crossword_clueparh3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408336/normal_600aa1856f6b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448536/normal_604f7e22d4df4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489988/normal_5fdf769ea15c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_602733ab71138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_6013a5d1129a5.pdfIn PDF document text
    • http://daimontimur.org/753518878449ar01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6555b30-abc4-4523-8520-6e8caf9e6522/divodezeniloj.pdfIn PDF document text
    • https://9049409e-dcbb-43fe-b7cb-0f7a5d042cf1.filesusr.com/ugd/e59eee_e1ebbb3e5d0a42afb49ff5bd9e887118.pdf?index=trueIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_8c4fc1584604493bbec011020334510d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3272f0f3-5d34-4d1d-8689-6f893f56bb5f/how_to_geothermal_heat_pumps_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ee6947-8845-4201-b8c5-298759b9193e/liwej.pdfIn PDF document text
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_ff1428733f5e4ca2a4ebfd53bc17a94e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec23f9e-797c-4735-85eb-6cd1e764d338/87304448425.pdfIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_95464da07c89415b92623e44de22c9ac.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8112ec8a-c411-40ea-ad3f-6f12b83a5689/wamalosut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0bde1e7-0e39-4f77-813b-b41c95028a9e/golilebaxugejoxodigubo.pdfIn PDF document text
    • https://5b5cf7c4-d983-4e27-bd54-44d52fc9074e.filesusr.com/ugd/2f9450_3dc025adf1af4fbc9548819dea65fc7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/187e7c90-dae6-4804-b34a-609e45f093b3/black_and_decker_20v_circular_saw_blade.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28B 5360 bytes
SHA-256: 04bc18073d049f0dcd1487ae59c7a053517bcc05d9124d6314984e6eeb66ffc3
font_01_sfnt_off000104a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 10872 bytes
SHA-256: 19ae4676044161538866a351caa4cb268db07e6ab55932e7913fa630604e712c