Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d40eb330dba2cf…

MALICIOUS

PDF

138.8 KB Created: 2021-03-27 22:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 416afbe1c55d2d9adbc9a45b9590bc4c SHA-1: 597f9357419b83b0ef2f22e5bccf0810df6a1450 SHA-256: 69d40eb330dba2cfa55fc2ba3e933c1919ae72b145c7ac50bacfb462dd318e48
126 Risk Score

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 an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be related to the search term used in the URI, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/award?keyword=berserk+manga+complete+pdf PDF link annotation
    • https://ralutadepijug.weebly.com/uploads/1/3/5/3/135305627/6a01425.pdfIn PDF document text
    • http://rakojegad.22web.org/best_political_books_of_2020.pdfIn PDF document text
    • http://kaxatepipewagob.22web.org/78777222792.pdfIn PDF document text
    • http://rutopadazemed.22web.org/jekevakapasag.pdfIn PDF document text
    • https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/natisas-zatuxulaxu-litejodadugitu.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/23976116077hbxkj.pdfIn PDF document text
    • http://myfavoritesun.xyz/tataforozenebigagorv2ohp.pdfIn PDF document text
    • http://puzogakuwe.22web.org/who_is_rich_and_who_is_poor.pdfIn PDF document text
    • http://lidzadva.xyz/258842480813a78y.pdfIn PDF document text
    • http://ruwaxidalemib.iblogger.org/bhagavad_gita_quotes_tamil.pdfIn PDF document text
    • http://delibopujex.iblogger.org/ru_bsc_1st_year_syllabus_2020.pdfIn PDF document text
    • http://show-visitor.xyz/35643532837swn3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/36285390480.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/wrong_turn_movie_list.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/49129313403.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/viwasuxezixowafufad.pdfIn PDF document text
    • http://wixuvixur.rf.gd/mamma_mia_songs_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/como_remover_tinta_de_impressora_da_pele.pdfIn PDF document text
    • http://vakabivemu.epizy.com/ad_campaign_plan_template.pdfIn PDF document text
    • http://guzumirofega.epizy.com/cours_sur_le_carburateur.pdfIn PDF document text
    • http://garamerese.rf.gd/5322587700.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ED5 47724 bytes
SHA-256: dd580000996e13b57de4012b158fedfb0eff376ab1a728177d857b5335296c89
font_01_sfnt_off0001e22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E22D 5588 bytes
SHA-256: da4223e744646398a76ae1b7826e56053499dc200f4b24196394c4acb0c6de42
font_02_sfnt_off0001f51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F51E 11784 bytes
SHA-256: 0e0bc8941d99832eb5e402dcb644c92d1b0570b48d5ef9f488960d523a0c4bd9

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