Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ad57b7e8742ea0…

MALICIOUS

PDF

74.2 KB Created: 2021-03-26 10:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b0b81bab3e710073d9cab7838889836f SHA-1: 3393024f591b333018438a534ce9adfa47fbf15d SHA-256: 07ad57b7e8742ea086054e3af230940b845190d924cf13463dc040b9b2eab24d
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting it is part of an SEO spam or link farm operation. The document body, though heavily obfuscated, contains text related to "When mr pirzada came to dine guiding questions and answers", likely a lure to attract clicks. The presence of multiple external URIs and a PDF link farm heuristic indicates a strong intent to redirect users to potentially malicious or unwanted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wix?keyword=when+mr+pirzada+came+to+dine+guiding+questions+and+answers PDF link annotation
    • https://xewikoleruwi.weebly.com/uploads/1/3/4/8/134897031/viseremibib_zojan.pdfIn PDF document text
    • https://viwoxewadekam.weebly.com/uploads/1/3/4/0/134016770/e81ac7ffead.pdfIn PDF document text
    • https://gupibaparokepes.weebly.com/uploads/1/3/4/8/134889539/a6f1c1109f.pdfIn PDF document text
    • https://nogetutiru.weebly.com/uploads/1/3/4/7/134711470/d7b802ab2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5ff0035ea36b9.pdfIn PDF document text
    • http://xonesasa.iblogger.org/mefesirozujegiminom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_601b50d602f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_60327a23edbcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_600527d84c0fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_5fd6753404939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490141/normal_5fd8a0f04ccad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tokafibalo.epizy.com/smokey_and_the_bandit_1_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/848437ae-dfc0-43b0-96f8-8be8fd7484b6/black_and_decker_car_battery_charger_how_to_use.pdfIn PDF document text
    • https://d6236f05-450e-4b96-9875-1783d83c708b.filesusr.com/ugd/912de2_67607625a3e4486a94d08806157cac34.pdf?index=trueIn PDF document text
    • http://fepoxojosatomu.epizy.com/white_rodgers_1f80-361_installation.pdfIn PDF document text
    • https://836291d8-7b77-40db-be8c-3105928c7ef3.filesusr.com/ugd/aae074_95c894366db740b0bbbff0503506beb3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f607d32c-8860-44dd-b378-ce474276c067/razatozewumis.pdfIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_11a66ad14cf2469c85e1e05ee890865e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ee6e64-605d-4898-8f43-30e9b0ac7701/91363290369.pdfIn PDF document text
    • http://koferajovu.epizy.com/what_are_the_elements_of_photography_in_1830.pdfIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_6023bae38f0d47bdbaf0644b09370a4f.pdf?index=trueIn PDF document text
    • http://kelovikaxovixu.epizy.com/portfolio_landscape_path_lights_lowes.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_off0000e50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50A 5736 bytes
SHA-256: 2ec12e52e87e7987ddc30c588a7732066edbfabeff44d2a6ded9f81576e7390e
font_01_sfnt_off0000f876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF876 10160 bytes
SHA-256: c56c4c00b6de3f64974df2e5d59c8445c9e35d07bcd8992817d40538bdc8d86e