Malicious PDF — malware analysis report

Static analysis result for SHA-256 57326c1b3f13c433…

MALICIOUS

PDF

73.7 KB Created: 2021-01-20 05:02:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: cfb66ae9f986521498dc48fca3f08287 SHA-1: 559d583ee113f3349ae71d532f3a2c83a5e46e11 SHA-256: 57326c1b3f13c4336b582f78e8c91f01a69cdce3a317ae704dabfa5f50e8a0b8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing attempt. The document body, though heavily obfuscated, suggests a lure related to drawing cars, directing users to external URLs. The presence of numerous links to disposable hosting domains reinforces the phishing and link farm characteristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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
  • 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://trafficel.ru/123?utm_term=how+to+draw+cars+characters PDF link annotation
    • https://site-1175580.mozfiles.com/files/1175580/vajovewutopidasegizefofez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427528/normal_5fe11ba8e93f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f922b2fbac57.pdfIn PDF document text
    • https://site-1185297.mozfiles.com/files/1185297/52990396203.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502817/normal_5ff017d648d94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5fd15249ea758.pdfIn PDF document text
    • https://site-1166600.mozfiles.com/files/1166600/wifi_doesnt_work_on_my_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411228/normal_5f96f818a30d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447640/normal_5faaa8c3e2448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5fe844cccc246.pdfIn PDF document text
    • https://site-1167994.mozfiles.com/files/1167994/22780405063.pdfIn PDF document text
    • https://site-1244992.mozfiles.com/files/1244992/broken_heart_images_wallpaper_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454420/normal_5ff2157d361af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487409/normal_5fec66d10d5e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446275/normal_5fcb04a3d4170.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nixuverojezuluz.epizy.com/weladekiko.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CE 5048 bytes
SHA-256: f54d628c5a35d874a1f856c20bfabfa2ff1cf589c3379ad93a9e778e6ad63f59
font_01_sfnt_off0000f4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FF 10748 bytes
SHA-256: e871970c6c705c9468667b8785e04d81b5f72b102b7433155904bf063ea54936

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