Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffd7e19b2e5524f…

MALICIOUS

PDF

59.6 KB Created: 2020-11-02 21:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81830b8a2baefb3cf708c19e38193cf4 SHA-1: e5c3d4c5a228c67b85ddc332cf328e1a3f159706 SHA-256: 1ffd7e19b2e5524f4add44d7446d6677703f487d85bffa6cf0b4f1fd4f05a815
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to direct users to harmful content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of the URL 'https://gettraff.ru/aws?keyword=unblocked+games+google+sites+22' strongly suggest this malicious intent. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure.

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://gettraff.ru/aws?keyword=unblocked+games+google+sites+22
    • https://wivixilor.weebly.com/uploads/1/3/4/3/134371520/9717240.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a66a937b-6e43-43fa-a044-d59c65efbad6/xirakagulo.pdf
    • https://cdn.shopify.com/s/files/1/0484/4847/1194/files/fawit.pdf
    • https://cdn.shopify.com/s/files/1/0500/9847/1080/files/who_made_up_the_first_and_second_estates.pdf
    • https://cdn.shopify.com/s/files/1/0483/8182/1088/files/albumina_en_orina_valores_normales.pdf
    • https://cdn.shopify.com/s/files/1/0268/8113/0668/files/load_shedding_notifier_apk_download.pdf
    • https://s3.amazonaws.com/wilugugo/18994031008.pdf
    • https://s3.amazonaws.com/xisefowu/rimozufidanuradogixurup.pdf
    • https://s3.amazonaws.com/donake/guroliriluzafunufapir.pdf
    • https://cdn.shopify.com/s/files/1/0498/7056/9624/files/lijex.pdf
    • https://cdn.shopify.com/s/files/1/0483/1713/7051/files/android_studio_convert_inputstream_to_string.pdf
    • https://cdn.shopify.com/s/files/1/0268/7683/8072/files/apa_reference_page_book_format.pdf
    • https://cdn.shopify.com/s/files/1/0507/9810/0665/files/chamberlain_liftmaster_professional_formula_1_manual_2280.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009cf5.bin
2daf7193f7b96136444f61b0d411f0f4697045ccb06b6475f68b36a6de107d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF5 5280 bytes
font_01_sfnt_off0000aed1.bin
97c25f74d5c48d6a834ed965b179a917b032ea78c4f8eea25c1b37d315280b78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAED1 10672 bytes
font_02_sfnt_off0000d331.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD331 4324 bytes

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