Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a6ce55073801af…

MALICIOUS

PDF

71.8 KB Created: 2021-02-22 02:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4a93319585ad0a299c5f41cbf152a4c3 SHA-1: 8fee4fbc611ab44baa09c86d59dd64306c497607 SHA-256: 12a6ce55073801aff5a3cdc1029d657c400877c26296235fbc9774d2f785b4d7
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a link farm, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. Although no scripts were extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/strik?utm_term=lg+blu+ray+player+region+code+unlock PDF link annotation
    • http://copyrightsupporthelpcenter.com/estimating_worksheet_gcsetm08n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450434/normal_60316db972147.pdfIn PDF document text
    • http://sallehub.xyz/group_1_periodic_table_worksheet6sozf.pdfIn PDF document text
    • http://makamar.online/eyeclops_mini_projectorw3u0z.pdfIn PDF document text
    • http://fitokaps.xyz/384878406597avds.pdfIn PDF document text
    • http://nature-ital.space/zufibokiz11qa3.pdfIn PDF document text
    • http://zikuwojanubeg.iblogger.org/71501109469.pdfIn PDF document text
    • http://bhd-management.space/dajebironemiwovoakzw6.pdfIn PDF document text
    • http://vash-komfort5.ru/53126631293x30ir.pdfIn PDF document text
    • https://xuwudivalef.weebly.com/uploads/1/3/4/8/134889087/mimitojepo_ruvuvoni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465687/normal_5ff5406712596.pdfIn PDF document text
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/ecca8.pdfIn PDF document text
    • https://sedawuxel.weebly.com/uploads/1/3/5/3/135326539/sanojezolokarov-jojorofikabaje.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/zuwosil/kopekokowakubozup.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/26987184163.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/39265680269.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/monkeys_and_apes_word_whizzle_search_answers.pdfIn PDF document text
    • http://tenowuwewid.epizy.com/income_guidelines_for_wic_in_ky.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_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 5312 bytes
SHA-256: 03c2aaa2a781f1a5ca4b1b5372618fe891fb14132e7b483a7953741f30abe189
font_01_sfnt_off0000ee53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE53 10420 bytes
SHA-256: 39a16bb898d47581fd33c166ca0464dfd0d44385f65cee5b9b7b444ce6d564be

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