Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4021dd33b07a24…

MALICIOUS

PDF

83.0 KB Created: 2020-11-18 10:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c43666f602d747d07095de207803fbc4 SHA-1: 5d2748013a73c29c6e4d9f893c0b7a04750eb5fd SHA-256: 9e4021dd33b07a241d5ebedcf387e278c09c67b6dc64cadd1975eb091254c809
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, and detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous external links, with one prominent link pointing to 'traffking.ru'. The document body, though heavily obfuscated, suggests a lure related to a video game, likely to trick users into visiting the malicious URL for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=where+are+the+mayor%2527s+shorts+stardew+valley
    • https://baloxojiregape.weebly.com/uploads/1/3/4/6/134685367/xovidabapowap.pdf
    • https://febefuso.weebly.com/uploads/1/3/4/3/134382796/vuredodosesekojok.pdf
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5fab8f2053a39.pdf
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5f95cb7f67418.pdf
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5f8e1d38db6c8.pdf
    • https://vedemolo.weebly.com/uploads/1/3/4/7/134702866/5c5f175f.pdf
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/vajomugibator.pdf
    • https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/felalewir.pdf
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/budokegigez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/55ba0262-2051-4ff9-85b7-4ce9607e9ed2/outlast_whistleblower_collectibles_guide.pdf
    • https://uploads.strikinglycdn.com/files/1f1a98e2-1a65-41f5-8bfe-5fd6ae0e0439/dedele.pdf
    • https://uploads.strikinglycdn.com/files/851d9dec-c6cb-453e-b8fe-0df9683a631e/40072266285.pdf
    • https://uploads.strikinglycdn.com/files/fdff1851-268f-4150-ac7f-cfcab0296365/hitch_hauler_with_bike_rack.pdf
    • https://uploads.strikinglycdn.com/files/beed282a-ab78-4490-9734-0777b312dcd7/ziwogu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4e5.bin
398e8e8d87ec8a53aa0303a37107681ac097744072acc3ece9371a9c83a1cdce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E5 5364 bytes
font_01_sfnt_off0000e6de.bin
dbf9653e9cc9c355857c20e3feab1a72e51872c22358b2729f6db0d057a0fad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DE 6340 bytes
font_02_sfnt_off0000f663.bin
d752ee4f7fdb5a18a184fc0465a7e43dc8cd1017b251b93c326a6e9acc192b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 1800 bytes
font_03_sfnt_off0000ff38.bin
5236de888dacc086b0ad79e5b1a77927883729fb972cca5119c708438b41bdeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF38 11720 bytes
font_04_sfnt_off00012764.bin
0f5ff492cf97fe5bdb7b9819ed7e2805724e02e0ac0e0e7bd1563eb72485b420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12764 16356 bytes

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