Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7abe7d4c8b21716…

MALICIOUS

PDF

93.4 KB Created: 2021-04-04 00:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33f0c130d27d8b3b18e7df137e7fa99e SHA-1: b104569b545b741190001f2dc0bb24d458aa069c SHA-256: e7abe7d4c8b21716525013deda5585c001bb657604c5d03ea685273ead2e4116
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=gunner+guide+tera+ps4
    • https://masarifixi.weebly.com/uploads/1/3/4/4/134486171/bawajunaladituraz.pdf
    • https://dolepaxutafajur.weebly.com/uploads/1/3/0/9/130969408/mabipipefagogabe.pdf
    • https://vomenipof.weebly.com/uploads/1/3/4/5/134585177/7e87b91a2784061.pdf
    • https://wibotutez.weebly.com/uploads/1/3/4/0/134012840/a84df788537a.pdf
    • http://merishwheelrecords.com/can_you_take_permit_test_onlineo1jow.pdf
    • http://shoop-fn.ru/sinopkyrx3.pdf
    • https://wifonofiwi.weebly.com/uploads/1/3/4/6/134636358/xadupusozufetuza.pdf
    • https://magapevalapa.weebly.com/uploads/1/3/0/8/130874167/gebazow_livubaxefof.pdf
    • https://jakuxibakamu.weebly.com/uploads/1/3/1/4/131407414/7949803.pdf
    • http://6gusevshop.website/sections_of_cgst_act_20175w6pt.pdf
    • http://siankaanmexico.com/vewujiwebusotuzsvtb1.pdf
    • https://xoxawipexari.weebly.com/uploads/1/3/0/7/130775732/4f8ad75bb8.pdf
    • http://bcipreactivaperu.com/15823726034837mu.pdf
    • https://xinuluparos.weebly.com/uploads/1/3/0/9/130969110/vavasikisef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bugutaj/24016356340.pdf
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_f4404d75d88f42b28aaa52897ca00a2c.pdf?index=true
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_c51b152acaa644a686b5179bcacb13d2.pdf?index=true
    • https://s3.amazonaws.com/guvovigo/satuliwobogigesefe.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_off0001305a.bin
f9b511a41e57a427babbbcbd9ef369f6945e0b52f80df5e56037465eaa1c15e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1305A 5212 bytes
font_01_sfnt_off00014232.bin
6619543c6afac23cf67d15e2fb0e9c26420ffc655f39233ae0b1bbb55f5f3832
pdf-font-stream PDF embedded font (sfnt) at offset 0x14232 11316 bytes