Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a784677800a9a9…

MALICIOUS

PDF

37.2 KB Created: 2020-09-04 12:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32dad5a9a20f8db92d449c86e8ba6c03 SHA-1: 5a841e98ba00cbbb0bd52be03b63ab5b0e3d0c71 SHA-256: 10a784677800a9a96e0d70045067dadc0c8d5cf1b2be6933f07a8af775a21a23
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for the game 'Guilty Gear x2 PS2 ISO', likely intended to trick users into clicking the malicious link. The presence of many external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=guilty+gear+x2+ps2+iso
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/3d0627_3d74c28e31354db88f4e3ea46bb04424.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_6b28a78ff0ab492981946b106f9c4a4c.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_857ee98f2af64987adee5208875b1bcc.pdf
    • https://static.usrfiles.com/ugd/10b11f_18e5a5fe9ed947e7898aa35d35fc85d6.pdf
    • https://static.usrfiles.com/ugd/ae15ca_7e414075b8d84106aa3e0a8173427ca7.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/fodisozu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/equations_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/6509/6857/files/66373926855.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/base64_decode_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/baotian_125_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/tf2_infinite_ammo_command.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5314/files/48790358531.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/que_es_energias_renovables.pdf
    • https://cdn.shopify.com/s/files/1/0431/9589/1871/files/dreamweaver_for_windows_8_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/font_family_css.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052ce.bin
38d97969da11ec59deeb4668cbf8485945762d93613bb3307dfc5e0914de226a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52CE 5320 bytes
font_01_sfnt_off00006511.bin
2f70770053cecfdc4adb32a01d3c0961e2492dbd63536d3626d251c67e79e3ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 10300 bytes

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