Malicious PDF — malware analysis report

Static analysis result for SHA-256 83843a135508b0e8…

MALICIOUS

PDF

67.5 KB Created: 2020-12-25 21:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 399ede5bb4052a77d090db378cf4e39e SHA-1: ac8edd9b4792016ec05d7eadd8bdbcc6d01fd60f SHA-256: 83843a135508b0e848c530f21fbde86a838b6cddc1e3a3293454589b2bf887e1
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors and link farms. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7820

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/wb?keyword=tiki%20kart%20island%20mod%20apk In PDF document text
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/simija_joxote_potenosutovof.pdfIn PDF document text
    • https://kudizuvawemexol.weebly.com/uploads/1/3/4/3/134307781/5457228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5fa0dc011f878.pdfIn PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/pekakinuvesu-gixigo-jugovemudo-jiriwokagerovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_5f906c69e92d6.pdfIn PDF document text
    • https://dawofatodir.weebly.com/uploads/1/3/4/7/134756430/lemexumukiwijubogi.pdfIn PDF document text
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/nagijigebit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7539595-505f-4224-914f-c7ff82b364eb/87251871517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e14206-3093-42ba-b25b-efda54f226ee/35519799596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc80212f-7f09-48cb-b834-f23fbd279f44/2874704833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/235daf91-fc5c-45b6-b5d4-c533e0a32a5f/centaine_dizaine_unit_ce2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c40a57-482f-4ed2-9877-0f352a4a97f2/20264460359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914ea20e-b422-4d4d-9980-a4d1dd47890d/365_table_topics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9871542-c39c-40f9-8fb7-d6952ce85ac7/kiwesunokejedejitixil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cffda052-55c9-4349-80c4-ab533a71d19e/how_to_apply_vinyl_decal_to_glass_block.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C4 2944 bytes
SHA-256: 95a5b71ad461af702de18db646c13b1c9fd01017ae751af4c53b67dc47a933f6
font_01_sfnt_off0000eb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB50 5120 bytes
SHA-256: c500128dde7a4688840bfa1fb945ee2c405ff93243071f9e356be99c08be13ad

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