Malicious PDF — malware analysis report

Static analysis result for SHA-256 1308803d53b2eb13…

MALICIOUS

PDF

48.9 KB Created: 2020-09-16 21:39:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74b1b4025a9c0b9d071a850b5a304fb8 SHA-1: c9f110880a620eb3db24dce083a59ab32a5d6ee1 SHA-256: 1308803d53b2eb136847104ffe905c6c6cab6255bd426d22a823fed65ebad65e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file exhibits malicious characteristics, including a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though partially obfuscated, contains a URL that appears to be part of a social engineering lure, likely intended to trick users into clicking it. The presence of a 'ClickFix' heuristic further suggests an attempt to bypass security measures by instructing the user to execute commands, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://ttraff.club/wix?keyword=xbox+360+guide+button+not+working+pc
    • http://files.sccliteracyproject.org/uploads/1/3/2/7/132740445/navotudelevu.pdf
    • http://josafa.ritacousins.com/uploads/1/3/0/7/130739835/jejuzizulosidofo.pdf
    • http://pozizedo.thecivicexperience.com/uploads/1/3/1/3/131384609/tageputasozofomemu.pdf
    • http://fusukako.mcnamaragypsies.com/uploads/1/3/1/4/131438500/f1410b439a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://4c4f344d-6647-4089-91d2-6b9b714feb74.filesusr.com/ugd/5b1e3c_7aaa20a56c284eed830cc1be7f522a8c.pdf?index=true
    • https://643d9cbf-8428-4e2b-a2b4-8d39c2516f53.filesusr.com/ugd/592671_b4e089fdbad347de9483751d7b9aa263.pdf?index=true
    • https://45fd41de-095b-42c8-abb3-cb512fccf269.filesusr.com/ugd/defcb2_f4ea169a800d47a4965dd00c0e4af033.pdf?index=true
    • https://2e555c66-c733-4bda-8595-e34f8dd3db30.filesusr.com/ugd/d43733_d835b02a09dc4030b8f9c82b8828b194.pdf?index=true
    • https://82cbae4b-55c3-4976-82bf-9147ee0d23eb.filesusr.com/ugd/ee6100_ee7aeba529ea4363ae9e6cd3149029fa.pdf?index=true
    • https://c187352c-787f-4c76-9f07-9bcf1620c6c4.filesusr.com/ugd/e3325f_71e78090e01f4e67b2ddbf699324f86d.pdf?index=true
    • https://883c4817-c03b-498a-a8fc-dad28977f229.filesusr.com/ugd/4aae87_bb804c0058134069b0370916067b4bb0.pdf?index=true
    • https://800b5d52-9965-46c5-9510-6b5dff9b50a8.filesusr.com/ugd/2c76f4_ded738ca3ba64420b5a47060f57d13a6.pdf?index=true
    • https://516e64ab-fc11-4436-bad2-aad17472e75d.filesusr.com/ugd/7a359d_9710c5cedfa64da6827ce461d465c826.pdf?index=true
    • https://26cb46b1-8f4a-47ff-b682-406295e3e167.filesusr.com/ugd/0286dd_fe913bc857c741c3acad4cc68933b2d5.pdf?index=true
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007312.bin
ade66ce8b94dc6a7c3935b84a14970082d2747109cb38c6b1b32d2380bd53c3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7312 5504 bytes
font_01_sfnt_off000085e1.bin
4fa2ce00f24b3757dc0bf6516120d13edcff0ea2c5bca558bd6560c8663dfe3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E1 10096 bytes
font_02_sfnt_off0000a877.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA877 4324 bytes

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