Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cab66ae7f51c95…

MALICIOUS

PDF

253.8 KB Created: 2021-05-31 13:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e384ff8346649284596e3cf1c1e1b48d SHA-1: c028644387bc578527314aedd49b44ab0f99fdc2 SHA-256: d8cab66ae7f51c95695bff3281a5aed83190ceeefc7215166f2ee5f06c029f39
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload. The document body, though heavily obfuscated, suggests a lure related to 'cheats apk', aligning with a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/123?utm_term=asphalt+xtreme+cheats+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369153/normal_60334de98c15c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505326/normal_60482461db748.pdfIn PDF document text
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/kokaxigudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489440/normal_600e5a0a80a59.pdfIn PDF document text
    • https://tidevaxapoled.weebly.com/uploads/1/3/5/9/135971763/kajim_fodedufexu_godumi_sefijole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_60172277304dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374956/normal_5ff3f8a081dc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_5fe8193cb42c1.pdfIn PDF document text
    • https://woxopipuwesubaj.weebly.com/uploads/1/3/1/4/131453061/kusexizolad.pdfIn PDF document text
    • https://vebipebetas.weebly.com/uploads/1/3/4/0/134012388/4a763d34cbd9b.pdfIn PDF document text
    • https://pepedojimu.weebly.com/uploads/1/3/1/0/131069997/luxadilaje-kedoto-nuziwuwenaruki-ximola.pdfIn PDF document text
    • https://guzaluvezitalil.weebly.com/uploads/1/3/4/6/134645516/masezuw.pdfIn PDF document text
    • https://derufobi.weebly.com/uploads/1/3/2/6/132682106/wokasokex_nizepoxet_gudujasep.pdfIn PDF document text
    • https://dujinagipufamod.weebly.com/uploads/1/3/4/5/134587046/f2f5c84c2d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501963/normal_5fc5a9cb61ff6.pdfIn PDF document text
    • https://mepogazab.weebly.com/uploads/1/3/4/5/134501519/rimitomen.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/3622b319-ab37-4986-ad17-b0a0525ff693/covid_safety_tips_for_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9c6b71-cbff-42bc-ae62-c8b2cd9733a0/largest_wolf_species_that_ever_lived.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39977 5296 bytes
SHA-256: 8392199ce85dd318a2d44f6f4dc3f57b9995332f3c8da955346780b1ddb6cbbc
font_01_sfnt_off0003ab4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AB4F 12208 bytes
SHA-256: 44946e97a5f7abc0b26f62327627f24b41be6ca490fbb9187a937992680ff7a7
font_02_sfnt_off0003d3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D3D7 16088 bytes
SHA-256: c487aa01613208473e3c0b892de3260687b9c0341624d6c76d95d7849508583e

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