Malicious PDF — malware analysis report

Static analysis result for SHA-256 5995544c6bca0529…

MALICIOUS

PDF

65.9 KB Created: 2021-02-17 15:04:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3182fd7b72c11b7883c5ffd236bac23 SHA-1: 46f9eb91bff8eab6a2ddd37441dc2f10586d36cb SHA-256: 5995544c6bca0529c39463d61616f118939d7ec458336bbceb66de79a7679adc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan delivery mechanism. It contains a large number of external links, many pointing to potentially malicious domains, and one prominent link to 'bologen.ru' which is likely part of a link farm or SEO scam. The file's structure and the presence of numerous external links suggest it is designed to redirect users to malicious websites, potentially to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=logarithm+change+of+base+worksheet+pdf
    • https://fitijozis.weebly.com/uploads/1/3/4/3/134372299/7346056.pdf
    • http://begezuwoxinum.iblogger.org/vuxoji.pdf
    • https://kebuwusatame.weebly.com/uploads/1/3/5/3/135343151/3e082c0876f41e8.pdf
    • https://mufabevazom.weebly.com/uploads/1/3/1/3/131382955/bad8d440e0b441.pdf
    • https://fijuzezakuxulow.weebly.com/uploads/1/3/5/3/135391315/9a816.pdf
    • https://fejilezujew.weebly.com/uploads/1/3/4/3/134340931/8f2cbe.pdf
    • https://cdn.sqhk.co/rowubuvuke/jgeorhb/mobile_vs_digital_wallet.pdf
    • https://mufuxavezefajox.weebly.com/uploads/1/3/4/4/134497947/600fe5c9.pdf
    • http://jebumivusesujan.iblogger.org/hotstar_vip_apk.pdf
    • https://zageporipemaza.weebly.com/uploads/1/3/4/5/134507549/mularujufofuxu.pdf
    • http://sapiwis.iblogger.org/android_notification_sample_code.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://raxusitusumulag.rf.gd/calapan_hymn_free.pdf
    • http://sosozodazu.epizy.com/mccormick_spice_costume_template.pdf
    • http://firulakaw.epizy.com/sociology_ba_1st_year_book.pdf
    • https://s3.amazonaws.com/bupijila/cbre_us_retail_report.pdf
    • https://s3.amazonaws.com/bisute/lodadexeduwavekimukorazas.pdf
    • http://ditorodizo.epizy.com/burra_katha_songs_2019.pdf
    • https://s3.amazonaws.com/zaxawetawupo/australia_immigration_visa_application_form.pdf
    • http://jobifizokugo.rf.gd/14769241676.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c28b.bin
8106a9ccfac117b39fbeebfa7a0aab57290cbacbea72fbce59f1b7b990178e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC28B 5772 bytes
font_01_sfnt_off0000d627.bin
457f3ae812a4a64f75a9642efa5bb478473fb2659b23ac71fddf66cdd8cc6675		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD627 10608 bytes

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