Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f953994c0c77d4…

MALICIOUS

PDF

72.2 KB Created: 2020-08-02 01:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d54eee373c4f6d6224f49728ef68f15 SHA-1: b77b5d78d8a4e557e73481785c52d5b278ea3976 SHA-256: 69f953994c0c77d40c77358e0efd12e7e7bde2647b0da994d507d202db1d4480
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, with one specifically identified as a redirector to a malicious URL. The ML classifier also strongly indicated maliciousness. The document's structure suggests it's designed to host a large number of links, likely for SEO manipulation or to distribute malware, with the primary malicious link being ttraff.ru.

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.ru/pify?keyword=ae+power+minecraft
    • http://files.handballclubchateauthierry.com/uploads/1/3/2/6/132696304/6017531.pdf
    • http://files.suzannetank.net/uploads/1/3/0/7/130740191/dugifosam.pdf
    • http://files.atowncenter.org/uploads/1/3/0/9/130969297/7522f.pdf
    • http://files.narayanahotelandresidences.com/uploads/1/3/1/6/131636914/1614267.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7911/files/kesha_don_t_stop.pdf
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/lozemazowukapupuvopoj.pdf
    • https://cdn.shopify.com/s/files/1/0444/2878/7878/files/infinity_chamber_rotten_tomatoes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/79550306108.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/pufexizeravor.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/zumokisopat.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/30881275394.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/xusikufowogozojuzaxupala.pdf
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/22932733230.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/39672168255.pdf
    • https://cdn.shopify.com/s/files/1/0433/9377/7827/files/76939377507.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/waliv.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
    • 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_off00008569.bin
af6e24984e568050142e0f871579b268c083f5493f76b461515b8597cd35a1ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8569 11960 bytes
font_01_sfnt_off0000ac7a.bin
ac76268ac894fd74a55cf9e4a0b833fa47b05ae90a4f56a53b7a53db827256b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7A 4820 bytes
font_02_sfnt_off0000bcc3.bin
37761e916ede0ec46c2bf5baac4f4bc0d8bb14fc03fffa1a1517df3f84d759b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC3 16456 bytes
font_03_sfnt_off0000f09b.bin
354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF09B 16036 bytes
font_04_sfnt_off00010503.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10503 4324 bytes

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