Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68889151cb9b6b8…

MALICIOUS

PDF

77.5 KB Created: 2021-03-07 18:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 39b16ab4bddf8ab7196c96021be5ac88 SHA-1: da37334828d97eeda953903b3c9d3cbfe34bc17f SHA-256: e68889151cb9b6b855752fbc6455f76db326685a9abc217ca47ca4f4c5df892c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and one specific URL is presented as a search result for a game-related query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, suggesting the document is part of a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/123?utm_term=how+do+you+get+a+royal+crown+in+animal+crossing PDF link annotation
    • http://jaxebememapi.iblogger.org/wibototezusa.pdfIn PDF document text
    • http://miworusak.iblogger.org/lirik_lagu_aku_rindu_bastian_steel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385228/normal_6007fe2ac0af3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373508/normal_5fca7b37a87dc.pdfIn PDF document text
    • http://xejevojesinil.22web.org/hec_lat_test_july_2019_answer_key.pdfIn PDF document text
    • http://nawogevimogagu.22web.org/dabusumug.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/rukubelumepinobisod.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/what_to_do_if_you_fail_pre_employment_drug_test.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_ca92a945d19449fb9cc607c334a4706b.pdf?index=trueIn PDF document text
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_91ab42b6c95142d49ffbd3210fcc5ebb.pdf?index=trueIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_2d6f137128aa4a159c5cf321a380c4ee.pdf?index=trueIn PDF document text
    • http://sufotef.rf.gd/fluke_771_replacement_clamp.pdfIn PDF document text
    • http://ropupifalapoges.atwebpages.com/xolubasomufirepusixeleli.pdfIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_adf7efb02fd74bb4b44b3cb8484dad5e.pdf?index=trueIn PDF document text
    • http://xawabaxazulaga.epizy.com/vande_mataram_dj_song_original.pdfIn PDF document text
    • http://tuxiwifu.rf.gd/15865487005.pdfIn PDF document text
    • http://sokurunofizune.rf.gd/blennorragie_traitement.pdfIn PDF document text
    • http://kavaguwefoxud.epizy.com/anon_goggle_lens_tint_guide.pdfIn PDF document text
    • http://katevafitaga.epizy.com/nejoxoginar.pdfIn PDF document text
    • http://nowimirozox.atwebpages.com/xefan.pdfIn PDF document text
    • http://xutenujute.myartsonline.com/43348399276.pdfIn PDF document text
    • http://rovatidakenaj.rf.gd/cornell_notes_sheet.pdfIn PDF document text
    • http://nabikelotedabe.epizy.com/wejaranojofakutope.pdfIn PDF document text
    • http://sodebaxekigefip.rf.gd/imtex_2019_exhibitor_list.pdfIn PDF document text
    • http://kemaduxisi.epizy.com/36782540681.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_off0000f16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16E 5416 bytes
SHA-256: afe09500731f06f461192e62c72424a175f4f8108174333c26e238870d894455
font_01_sfnt_off000103d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D3 10568 bytes
SHA-256: b66a668c1eea5989f4fa8cff8f15079f9450d1524b0c544f7ea4d0363e7497cf

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