Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e71bb6a863ff5d…

MALICIOUS

PDF

83.8 KB Created: 2021-04-08 09:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 32d4fb347103e11f4586e2e351f4e38f SHA-1: 04d548d8dfbcdec4cecedb7ba3645ba3303ff950 SHA-256: f7e71bb6a863ff5d89b956c43621dfe8f79a3a14e28fc0c9958351725c480972
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to potentially malicious content, indicating a link farm or SEO poisoning tactic. The embedded URL 'https://lozipotod.ru/wix?keyword=jar+jar+binks+running+gif' suggests a lure to a search result page designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly suggest an attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://lozipotod.ru/wix?keyword=jar+jar+binks+running+gif PDF link annotation
    • https://nulesurusisozi.weebly.com/uploads/1/3/4/7/134744420/bejubenutolibi.pdfIn PDF document text
    • https://doxemikawapuki.weebly.com/uploads/1/3/4/3/134314999/4111491.pdfIn PDF document text
    • https://fusavufotopos.weebly.com/uploads/1/3/4/6/134634064/tilixofuguxil_naxeroxenutatat.pdfIn PDF document text
    • http://ziwusis.getenjoyment.net/cirrhosis_treatment_guidelines.pdfIn PDF document text
    • http://lopixerirerenex.mywebcommunity.org/jurof.pdfIn PDF document text
    • http://kamefutebiwef.mywebcommunity.org/application_letter_sample_for_teacher.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/play_cards_against_humanity_online_with_friends_reddit.pdfIn PDF document text
    • https://wunogalet.weebly.com/uploads/1/3/4/8/134891918/bafa2f25.pdfIn PDF document text
    • http://mozaduz.mygamesonline.org/anthony_giddens_capitalism_and_modern_social_theory.pdfIn PDF document text
    • https://xavexedale.weebly.com/uploads/1/3/4/4/134475354/pemal-xudufibiludu-xewikijexul-jugupunami.pdfIn PDF document text
    • https://noribazab.weebly.com/uploads/1/3/1/8/131871745/mufazod.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/jovekus/72501772776.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/31940144720.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/54277018927.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/philosophy_in_the_age_of_reason.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/54285131899.pdfIn PDF document text
    • http://luvepel.myartsonline.com/35859416167.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/free_printable_year_5_comprehension_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/18886602433.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/87849281813.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/buximevimotirer.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 5172 bytes
SHA-256: 92b5c973b9199ea8c0c8488698cfdfac9a9fd385e33409e2a4e93a9e38aab38c
font_01_sfnt_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 1896 bytes
SHA-256: 426868031475cadaa1bad2ae17aa1923a0a31fae59147f151482c9dadd8b09a4
font_02_sfnt_off000112f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F1 11640 bytes
SHA-256: 12b85a064f2797e110f49a594992c97d13b4ace357e247635b808534bf836520
font_03_sfnt_off00013a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A40 1736 bytes
SHA-256: 74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d

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