Malicious PDF — malware analysis report

Static analysis result for SHA-256 be41025e8e708e19…

MALICIOUS

PDF

67.6 KB Created: 2020-12-02 08:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 86828fa37ed780e99fe8ee34764e4eb9 SHA-1: a93ca40d221b7ec108fa9c505b6fb05ed2cabd39 SHA-256: be41025e8e708e19a54f43cfb7971539ad5229b1c5d90bf954dea22b5df5386d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms or directing users to malicious sites. The heuristic PDF_SEO_LINK_FARM and the presence of an external URI pointing to a search-related URL suggest an attempt to drive traffic to a specific website. ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature, likely involving phishing or malware delivery.

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 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/wb?keyword=google%20assistant%20apk%20for%20kitkat%20no%20root PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f9ed155ae506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_5fa9c2bbca584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f8a22fdf3211.pdfIn PDF document text
    • https://zutofamofiselas.weebly.com/uploads/1/3/4/0/134040676/bebegeg-vaxijiwef-wovireje.pdfIn PDF document text
    • https://kogavoduwesexup.weebly.com/uploads/1/3/4/6/134600755/dumemevesero.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418781/normal_5f9d3c2a78f0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5faf71f6cd161.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1ddd960f2895dc1eea2d1/t/5fc645a84f98375720b45b37/1606829481239/do_simple_to_do_list_widget.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd3a3071-1b18-47d8-ac1a-455eb362bd1e/11192414734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc6d549-7bba-4c6e-b2d1-b3b33b2399af/56610194852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3345df7e-0012-4412-b4d4-9d386c8ff3e3/nakowisimow.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0baae3dfdd95b60d439b1/t/5fc1351a4e98326c023c0d68/1606497563527/sense_words_for_beach.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_off0000cc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC98 5164 bytes
SHA-256: 03a0d17ac2cecbd62c0a9044e4be1b20379530929989035f8bc6156a914cedd9
font_01_sfnt_off0000de48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE48 10384 bytes
SHA-256: 91ddeb19aafb0be4bc2a93e27af1180b430ed28a7b7086e7e3283695db8dab75

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