Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0fadb69a3cc72e0…

MALICIOUS

PDF

78.5 KB Created: 2021-03-09 18:30:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 996807f943f5a144eadc070a088560b7 SHA-1: 3937011820fceeef96a536658628429f9b3418d6 SHA-256: a0fadb69a3cc72e0c008ceb8b0aeb0202dcb1a6123f3ec769ae9054bc6280a06
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with 'fokemale.ru' and 'moneyindia.site' being particularly suspicious due to their disposable hosting and link farm characteristics. The document body, though heavily obfuscated, suggests a lure related to PDF content, likely to direct users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/wix?keyword=into+thin+air+pdf+with+page+numbers PDF link annotation
    • http://moneyindia.site/lepenimipalafagapuveiiz7u.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/how_did_europe_clean_up_after_ww2.pdfIn PDF document text
    • http://tokesuditetu.getenjoyment.net/how_to_factory_reset_iphone_without_passcode_and_without_computer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461229/normal_5fce242cb8a5a.pdfIn PDF document text
    • http://bioforcecolumbia.site/54388303136oozte.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425919/normal_5fcf171ce647a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419847/normal_6004817140826.pdfIn PDF document text
    • http://gazzsheff.xyz/bike_computer_your_personal_gps_cycling_trackerw0vu7.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/latest_gospel_praise_and_worship_songs_2020.pdfIn PDF document text
    • http://tokepubex.getenjoyment.net/wofukawokosazavoxade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_76ed59d7a02f436b863cac1235b55a49.pdf?index=trueIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_3e488f1a5dc3424786335a6181279874.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/40b09f15-ede4-44b0-ade7-ee69f7b9133f/cost_of_accu_chek_strips.pdfIn PDF document text
    • https://a35aa970-3e4e-4c20-be1f-53d10001bce9.filesusr.com/ugd/af4e73_0ee2be0e65754474aee36d85070a4ea4.pdf?index=trueIn PDF document text
    • https://73af689e-4c80-4f62-99d3-7a886641ad81.filesusr.com/ugd/3b5dd9_81e46de64c174b0c8a0fd7738cf8778b.pdf?index=trueIn PDF document text
    • https://59548cc9-d6a6-4b2e-bd73-2bfb7290c7b5.filesusr.com/ugd/3fd21f_e7acc27aab134fbf9d30ea27528ce502.pdf?index=trueIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_a51dd557a96849cf9a5c4acd533b1b5d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd2d501-0f17-4dc1-9238-6efff21ad398/kukizagudugaxanolot.pdfIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_4aa8014eaf3549939e4f3cd4b7582826.pdf?index=trueIn PDF document text
    • https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_996d8512cd094c96afc474cf3ab05bc6.pdf?index=trueIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_b80d971393534302a031ede03c9589e3.pdf?index=trueIn 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_off0000f6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EC 5592 bytes
SHA-256: d15fea798af0bb6fdf117e12e559ca4dacff7767eafaf4e789ebed1728b8b360
font_01_sfnt_off000109d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D8 10240 bytes
SHA-256: 0f7eb4d56317a6e30a29e66abe17af1793e49a2060fe9d34a1bc890b10f92361

Open this report in the interactive analyzer, or submit your own file for analysis.