Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f4f0f688837b45…

MALICIOUS

PDF

39.4 KB Created: 2020-08-02 20:39:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fccfe2bccc4287f2839f8f6c28b81f4c SHA-1: 754e07d7fd8afc4da2cf8bd6e4d5f0e43aa4e71c SHA-256: 00f4f0f688837b45f7e61f5a5845ab982e9231c322a5cef5302f02a2bfcd95df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector service, which is a common technique for delivering malicious payloads or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent, likely to drive traffic to the redirector. The document body and embedded URLs suggest a lure related to 'cheat engines' or game exploits.

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.com/pify?keyword=the+surge+cheat+engine
    • http://files.solretapsychicreadings.com/uploads/1/3/1/3/131383838/sezatosogerametux.pdf
    • http://files.riversplusguiding.com/uploads/1/3/1/3/131381640/9359488.pdf
    • http://files.woodbridgecommunitychoir.org/uploads/1/3/1/6/131636808/mizodu-dasigebade-sasaxosa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/25179175892.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/age_of_empires_gold_edition_v1_crack.pdf
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/84666986246.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/jejuwizelun.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/danutavarijap.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/15079498563.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/fujitudapediditebepevi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/rockstar_hindi_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/gaveketofepe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/watch_saath_nibhana_saathiya.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/73129166751.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_off00005bbc.bin
f05c80d69acb35f20213ef6e68167c84df7cc6c35f3c8914d9a0b5694a7b5926
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBC 4980 bytes
font_01_sfnt_off00006ca6.bin
8d56c4da956dfa815162883fa0203481b6d8a57fef62b29f95a9f555208b6c0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA6 10648 bytes