Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b5b2e0bb373e25f…

MALICIOUS

PDF

75.4 KB Created: 2021-02-26 08:49:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6605ae4cbbf3eecb68707ff0ff5efa3e SHA-1: 11952e40021928241460f860a5338b5e7162c769 SHA-256: 0b5b2e0bb373e25f9860cf115ffd8fd09e5384b3b54425ad212d166be780f62b
156 Risk Score

Malware Insights

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

The file is a PDF that uses a seemingly innocuous document body to mask its malicious intent. It contains a large number of external links, with the heuristic 'PDF_SEO_LINK_FARM' indicating a potential link farm or distribution mechanism for other malicious files. The ClamAV detection and ML classifier strongly suggest maliciousness, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=the%20man%20in%20the%20high%20castle%20netflix%20canada PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367646/normal_5ffba5b91284c.pdfIn PDF document text
    • https://panasijizikefiz.weebly.com/uploads/1/3/4/4/134446590/8169747.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5ff92879953ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491155/normal_60065df4887fd.pdfIn PDF document text
    • http://yewes.space/oop_in_c_for_beginnersdzy6a.pdfIn PDF document text
    • http://persequen.com/nikejitekikgnuic.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/jixuro.pdfIn PDF document text
    • https://nonejazusedebe.weebly.com/uploads/1/3/6/0/136099570/fajosunanevaxavok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453890/normal_5fecd0b164f86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/how_to_unlock_i-pilot_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/rainbow_fish_story_elements.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/velogufojivogapez.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/92507470320.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/wemuferimozubumonak.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/fowogavevokoreresaveke.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/39528152940.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/simple_present_tense.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_off0000e7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BC 5356 bytes
SHA-256: 1b2cee351f61e125d988f043429ce85628c2333baf3e74aa6d7bb84e9316c665
font_01_sfnt_off0000f9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D1 11488 bytes
SHA-256: 22e2a1eb73fe9d24543d5a0c39a4c4c795ad89ace69455fb00e6808837d33658

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