Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d394b057629c6ca…

MALICIOUS

PDF

74.7 KB Created: 2020-11-10 05:55:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6002660cbbc7f32018597de2b9b446db SHA-1: bb66b41df5cf44247aa2dd59df360e2837849a1f SHA-256: 5d394b057629c6ca1360a0398021260f69d805377e41c26b2d0b1814a1659a47
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffi.ru/123?keyword=dnd+5e+ranger+spells+per+level PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5f97951f0242a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f922ddfc5600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454988/normal_5fa90f5367f29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450038/normal_5fa8e46ea997c.pdfIn PDF document text
    • https://vopipogumibuwel.weebly.com/uploads/1/3/1/4/131453394/8588034.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/wonut.pdfIn PDF document text
    • https://muxamaxipusitu.weebly.com/uploads/1/3/4/4/134470051/rulavod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_5f9fb79a288fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_5fa579d164202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450513/normal_5fa1435745619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f885e40375ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f87506c91a27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fa22b6fefb3e.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/e453bf80-bf52-432b-a8f3-c8b98650f5d1/waveraf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b27aea4-c9c8-4973-b385-f47c844fa596/93445887549.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD509 4848 bytes
SHA-256: 6719bb5a9c9ee13bed52b10da02002bccba5d4865b59df38aa5c0d339abf80e9
font_01_sfnt_off0000e5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F9 5308 bytes
SHA-256: 2afab2ccc5c964efa72de2097aeb6054974348188360e20d5efc1ac0bf44d39d
font_02_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 11232 bytes
SHA-256: a0f7d331277e6a94eeea57f0f4a797182ec9500d3c9a89f1b2f664a14606f3a4

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