Malicious PDF — malware analysis report

Static analysis result for SHA-256 34d2bef48e928a49…

MALICIOUS

PDF

67.6 KB Created: 2021-01-02 11:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 36c6ab6d680e859e6c0d62c812ec6766 SHA-1: e18d995d5856e9bf0800b9eae1357c0191ccee4a SHA-256: 34d2bef48e928a49444e7bd1df9a013ab37719c81b69f794c78261572d1d6ce1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9705

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.
  • 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
  • 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://traffnew.ru/aws?utm_term=caught+on+camera+news+reporter PDF link annotation
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/4247526.pdfIn PDF document text
    • https://nutarubanamu.weebly.com/uploads/1/3/4/5/134528768/dbffc9830c.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/bijggcN/95169578171.pdfIn PDF document text
    • https://wanuvimuz.weebly.com/uploads/1/3/4/4/134462356/kusobojanot_woxiguzija_juliridin.pdfIn PDF document text
    • https://cdn.sqhk.co/govulasem/cjaidY0/sapoboxovejirotovat.pdfIn PDF document text
    • https://xoririsi.weebly.com/uploads/1/3/4/8/134848275/2756640.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/soseguninex.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/egijjIM/53618474017.pdfIn PDF document text
    • https://matekulelesij.weebly.com/uploads/1/3/4/8/134858821/f6117c.pdfIn PDF document text
    • https://gonutorimi.weebly.com/uploads/1/3/4/5/134590267/d115b6b6.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/pekaberosevaji-navoxojulan.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://cdn.sqhk.co/zopinulepa/jfl7lhj/tip_top_health_shoppe.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/mejawiwomak/android_remove_google_account_factory_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/20008218863.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E3 5312 bytes
SHA-256: d8f8edc851358f7110814e76bb7ab2172ca17ff6f6f4a03ab63c85e6a8140882