Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef6339ea0a29566…

MALICIOUS

PDF

74.2 KB Created: 2021-03-08 16:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0f534285bf1eac8ccca4d74053e4cb92 SHA-1: 5bed0770865119d51e37d289d1f312d95f49071f SHA-256: 4ef6339ea0a295663b94c1efddd68b4303ec88e8cdab88bc345d7b721d9a978f
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL points to a domain that appears to be part of this link farm, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. While no scripts were explicitly extracted, the nature of the link farm and the ClamAV detection indicate a malicious phishing or trojan payload delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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/award?keyword=assemblage+charpente+bois+pdf PDF link annotation
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/kivajafaket_fivomes.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/roland_td_4_price.pdfIn PDF document text
    • https://tevunuxewime.weebly.com/uploads/1/3/1/4/131452804/rorovetibusiw.pdfIn PDF document text
    • http://ravovenovibu.medianewsonline.com/wufejetoseluriziwuso.pdfIn PDF document text
    • https://sujujawajiz.weebly.com/uploads/1/3/5/9/135964945/6426677.pdfIn PDF document text
    • https://zaduguwage.weebly.com/uploads/1/3/0/8/130874015/mojupiraronubom-filojepafimojuw-nalozas-sosenurejuv.pdfIn PDF document text
    • http://kedepoba.sportsontheweb.net/descartes_meditations_summary_2.pdfIn PDF document text
    • http://zutumufedige.getenjoyment.net/ki_bikini_body_training_guide_1.pdfIn PDF document text
    • https://mifadumuvuvog.weebly.com/uploads/1/3/4/6/134689338/sanidetatonimo.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/simow.pdfIn PDF document text
    • https://cdn.sqhk.co/nujamuxeg/hbjfjjp/water_parks_in_vegas_nv.pdfIn PDF document text
    • http://mizebojusur.mypressonline.com/28123741049.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/61504027740.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/eqFVWNW/blockman_go_bedwars_hack_download.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/fomaralunex/basic_human_physiology_book.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/84322655601.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/68694164436.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/happy_birthday_song_only_audio_free.pdfIn PDF document text
    • http://womawujun.atwebpages.com/90829469229.pdfIn PDF document text
    • http://raxajabidadida.onlinewebshop.net/how_to_use_casio_graphing_calculator_fx-9860gii.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/32789163775.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_off0000e59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 5700 bytes
SHA-256: 88a58dd76e6191a75dba8cf3f65628dbe1dd7dccb6eef769ecb2a66a79f970d0
font_01_sfnt_off0000f8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CC 10316 bytes
SHA-256: e2c4fc7fd2498ef6f6a7f17a1d5bffca0da98077e0d74f6b68282583628f2f24

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