Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94340baf7edc6a8…

MALICIOUS

PDF

76.1 KB Created: 2021-03-31 10:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0677f1e96efdae9445a7bf5a4381ebe2 SHA-1: 77888faeb2c6f3f391acb2a030ffd41ca90d94ea SHA-256: e94340baf7edc6a83dcf4502971605748b11a4abc6122221433eb7a8b0cd6c1d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to potentially malicious domains, indicating a link farm or SEO spamming operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=automobile+industry+in+nigeria+pdf
    • http://theharaka.online/29643328900oxq1e.pdf
    • http://magic-spring.com/what_is_a_certificate_of_compliance_in_divorcexqylc.pdf
    • http://smilex.club/word_swipe_392ac4lw.pdf
    • http://erogan24.website/shadow_over_innsmouth_summaryg1icy.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://lnstagramverificationbadge.com/blood_bowl_2_skaven_starting_rosterjpnbf.pdf
    • http://simcars.ru/arzoo_1965_full_movie_download_filmyemcxc.pdf
    • http://art-practice.org/18324679115zy5p.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/forupokisip/sosutipewuwinumer.pdf
    • https://6ada6c45-9e8d-4063-9633-40b9e375d9b0.filesusr.com/ugd/9a7afa_6326ab32458f404a9b1d634cbee2149b.pdf?index=true
    • https://s3.amazonaws.com/saxefi/83474332921.pdf
    • https://s3.amazonaws.com/lolaritemukole/9207305034.pdf
    • https://36535336-4f9e-4c0a-b1ad-3385cb5d4299.filesusr.com/ugd/15ebe2_fb029fcbc4404892a2d3f44d6301fa5a.pdf?index=true
    • https://s3.amazonaws.com/nefomojuwet/behaviour_management_plan_template_aged_care.pdf
    • https://s3.amazonaws.com/bikikanafopavu/codycross_seasons_group_66_answers.pdf
    • https://uploads.strikinglycdn.com/files/c332f546-81c1-41d6-9ce0-7413c9d8e757/976077917.pdf
    • https://uploads.strikinglycdn.com/files/5238ae16-a104-4402-86a5-b3b52a6afc19/nordictrack_t7si_review.pdf
    • https://uploads.strikinglycdn.com/files/3979aab9-203a-4ad1-aad9-5f21189ad768/2015_jeep_grand_cherokee_workshop_manual.pdf
    • https://s3.amazonaws.com/fulazelof/fenurezibumurovasujopite.pdf
    • https://64f3f273-fd79-4cea-bc15-92b2431614e2.filesusr.com/ugd/542254_1c432f7696bf48a2a49db5b88304d95f.pdf?index=true
    • https://s3.amazonaws.com/jalasilunaz/26893399479.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_off0000eb95.bin
2187e0b54444ffa418077bdab8b1133de7a1264ba73a78e9622e8f560e306660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB95 5592 bytes
font_01_sfnt_off0000fe86.bin
3b3b99a66d62829bae12dfbca9a36de4dc0da5490ed68e725aaea9c8acf865aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE86 10676 bytes

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