Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ac58a88274498d…

MALICIOUS

PDF

85.9 KB Created: 2021-03-15 08:11:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7b819d4704dd22af4e04c981399093c3 SHA-1: d3efa205abbe375200edb0d1d911a8327d479c61 SHA-256: 65ac58a88274498d0c393f9625bbd4457c34d3bf60b75845d430bd29c74a44e3
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one prominent URL disguised as a search result for 'black and decker electric leaf blower parts'. This suggests a phishing or SEO poisoning attack, aiming to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a trojan designed for phishing.

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 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://jottigo.ru/strik?utm_term=black+and+decker+electric+leaf+blower+parts PDF link annotation
    • http://lawyer-consult.ru/how_to_learn_english_grammar_in_malayalamko03z.pdfIn PDF document text
    • http://rapalafipotofuw.iblogger.org/reses.pdfIn PDF document text
    • http://sozefavi.22web.org/sunirerupojegom.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/xezezosujoxawitu.pdfIn PDF document text
    • http://givepamodugag.22web.org/basanta_bilap_bengali_full_movie.pdfIn PDF document text
    • http://4gusevshop.space/347767077506w7ib.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/kenmore_elite_dishwasher_manual_model_665.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/pobixedele/pibuvuligar.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/81948448899.pdfIn PDF document text
    • http://pevipitoz.atwebpages.com/87063068102.pdfIn PDF document text
    • http://sakonolib.rf.gd/fevutomunonivumotipawidor.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/lexejimanukiragibog.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/diabetes_mellitus_type_2_treatment_guidelines_ppt.pdfIn PDF document text
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_fc8f886ae3534b47a7c5aa7b9cbffa7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/debiwelof/tosawasuxedanosozideta.pdfIn PDF document text
    • http://xekazaz.myartsonline.com/15441212232.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/application_ampre_android.pdfIn PDF document text
    • http://radiviwix.onlinewebshop.net/bluebook_citation_court_abbreviations.pdfIn PDF document text
    • http://nutagax.rf.gd/amplified_bible_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/ballena_orca_informacion.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/felevujejufuwoboraguduno.pdfIn PDF document text
    • https://8a5a474a-a671-4857-921d-d1df0ee72544.filesusr.com/ugd/523716_63399c6e900e4e2c9bd49978d5f184fc.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10606 5492 bytes
SHA-256: 07933db714807977d0d93ecb0fe5bac58752d6974d1a6e0e34e5552f6fd7efa8
font_01_sfnt_off000118ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118CE 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0001215c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215C 11412 bytes
SHA-256: 832264275b74c54355ac2a35b8db28fc632fcb8ec3c7748b0041c3a76d7a05e7

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