Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48076307087171a…

MALICIOUS

PDF

76.0 KB Created: 2021-06-01 11:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4cf92e4528a3de1d5666ff1dd8c42c4f SHA-1: f37bd23869b6b6d06729c889e565a7d3c0a14ada SHA-256: e48076307087171ae50cdc8be18c9c9c50c82e7d341b69c1fb58fc0687d39469
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary external URI pointing to 'https://lozipotod.ru/123?utm_term=google+calendar+desktop+windows+7', suggesting a lure to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the overall structure and URL usage point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://lozipotod.ru/123?utm_term=google+calendar+desktop+windows+7 PDF link annotation
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/7534392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_60157a33c3959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490265/normal_604cfe6608439.pdfIn PDF document text
    • https://zikagedatudupoz.weebly.com/uploads/1/3/4/2/134266226/2473653.pdfIn PDF document text
    • https://jokiwaxe.weebly.com/uploads/1/3/2/7/132740814/padewamudumeb.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/aecac8ffa664.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dijakezepo.pbworks.com/f/janudegavejejuj.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/w/file/fetch/144415863/59019903479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dfe3304-71e5-43f2-b30c-275720fea551/is_lithium_nitride_ionic_or_covalent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae8bc3b-47c8-421d-af3c-4e63d660e8e2/10274863612.pdfIn PDF document text
    • http://kinuwibe.pbworks.com/f/achyutam_keshavam_krishna_damodaram_mp3_song_download_pagalworld.com.pdfIn PDF document text
    • http://kevuxezedila.pbworks.com/f/o_que__genero_textual_exemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04216f30-880d-41ca-b30c-efc1ac6e490a/what_is_the_best_9.9_hp_outboard_motor.pdfIn PDF document text
    • http://vejivab.pbworks.com/w/file/fetch/144435708/93297243752.pdfIn PDF document text
    • http://foxobekizax.pbworks.com/f/miller_bobcat_250_weight.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/w/file/fetch/144449625/gta_kurtlar_vadisi_apk_day.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_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 5508 bytes
SHA-256: f1817727f09b2e3761b0fc374f5d9200be6d5c233a9110171e6d47457b522c15
font_01_sfnt_off0000fb75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB75 11404 bytes
SHA-256: a1748d727a96ef4f128e929a1c3528bba08dc2b67daedb5e63d3c39bd847e57d

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