PDF malware analysis — malicious · f30f98bfd1f71fb1

MALICIOUS

PDF

81.7 KB Created: 2021-06-01 20:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5bb3f460448d5b122753e13ace4fd396 SHA-1: adf1dfbf823dcd90e954bd6f61be2690e9cd40e3 SHA-256: f30f98bfd1f71fb1f6bf3784aa48e9e3f019d1a1d91534c029730e94f8e22f03

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which point to other PDF files, suggesting a link farm or redirection scheme. The primary URL, https://philabc.ru/pbw, is likely part of this scheme to drive traffic. While no scripts were explicitly extracted, the PDF structure and the presence of many external links, coupled with ClamAV detection as Pdf.Phishing.Trojan, indicate a phishing or malicious redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.7397

Heuristics 4

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
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://philabc.ru/pbw?utm_term=dibujos+disney+para+colorear+e+imprimir+pdf
- https://static.s123-cdn-static.com/uploads/4414860/normal_5ffff5a050040.pdf
- https://sewusadata.weebly.com/uploads/1/3/5/4/135401056/8aa862d8cd1072a.pdf
- https://lopadedabebaf.weebly.com/uploads/1/3/4/8/134897987/sotonaku_kosatugu.pdf
- https://cdn-cms.f-static.net/uploads/4401505/normal_5fd8b8bc3612d.pdf
- https://vogitoroxubas.weebly.com/uploads/1/3/0/7/130739894/c9f2edd2.pdf
- https://cdn-cms.f-static.net/uploads/4415962/normal_606ddefe0720d.pdf
- https://cdn-cms.f-static.net/uploads/4478131/normal_606c4026622c7.pdf
- https://cdn-cms.f-static.net/uploads/4423454/normal_603a69b878bcf.pdf
- https://cdn-cms.f-static.net/uploads/4369932/normal_5fd9f788dd009.pdf
- https://ferafavobob.weebly.com/uploads/1/3/4/6/134671558/dd8ba7.pdf
- https://duvetuxivana.weebly.com/uploads/1/3/3/9/133999993/fojinuliwoza-petukajikejekug-balakuxaf-pazufepurujije.pdf
- https://riwivuzis.weebly.com/uploads/1/3/4/2/134265818/sapuma.pdf
- https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/dd66a.pdf
- https://cdn-cms.f-static.net/uploads/4500453/normal_6062e4ff1b315.pdf
- https://sopowifumerage.weebly.com/uploads/1/3/4/3/134355846/wamarigesuvoxeduzen.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/0b896218-4404-478d-8f95-a5b18517063f/decision_tree_software_free.pdf
- https://uploads.strikinglycdn.com/files/586dec43-b074-4ab0-9d3a-1fe8e7443271/hands-on_machine_learning_with_scikit-learn_2nd.pdf
- https://uploads.strikinglycdn.com/files/16a46133-98b8-4114-b1b7-03245fc11d40/writing_college_application_essays_sample.pdf
- https://uploads.strikinglycdn.com/files/b9cd89dd-c990-4e00-9f16-967feee8de98/987524337.pdf
- https://uploads.strikinglycdn.com/files/f8be24db-51a1-4453-bbd8-a060599feece/molosubiwebenenibejega.pdf
- https://uploads.strikinglycdn.com/files/494eb1bf-096d-41c5-80c9-aedf3cca7e66/fitewumojanetagivanorow.pdf
- https://uploads.strikinglycdn.com/files/758bcbfb-8698-4623-a378-ca85757ad89d/how_to_get_simplified_radical_form.pdf
- https://uploads.strikinglycdn.com/files/19cc882e-21a3-4406-8413-f692fb2278f2/star_citizen_free_fly_ship_list.pdf
- https://uploads.strikinglycdn.com/files/5985e75f-b244-4d7b-bc18-80aa3abd4d73/la_metamorfosis_de_franz_kafka_resumen.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000112df.bin` `415c2f77d12303894bfe260768e0c3a31c7db9c9f81222dff7b8545529a4a697`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112DF	5620 bytes
`font_01_sfnt_off000125f3.bin` `5ba268360572a34a86f4b7ae1449eb6a0da5cd83915d721859096477f6be4ac2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125F3	11880 bytes

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