Malicious PDF — malware analysis report

Static analysis result for SHA-256 70674e3a88547aa5…

MALICIOUS

PDF

41.7 KB Created: 2020-07-08 23:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f72491b2cfdfe6773af3e54ac9660470 SHA-1: 31128c5974b1bd1e9b608ab874307ffce95baf49 SHA-256: 70674e3a88547aa5858c012b08b8261ea81b6fba8531e8597d5acfff9f3d250f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure or host further PDF files. The primary link directs to 'ttraff.cc', a known malicious redirector, suggesting an attempt to lead users to malicious content. The document body, while containing some obfuscated text, prominently features the search term 'dyke wall calculation pdf' alongside numerous URLs, indicating a link farm or SEO poisoning tactic to attract clicks. No scripts were extracted from this sample.

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.cc/wb?keyword=dyke%20wall%20calculation%20pdf
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdf
    • http://files.letspaintarabic.com/uploads/1/3/1/3/131379612/22ab9b14a11.pdf
    • http://files.rangersafc.co.nz/uploads/1/3/1/4/131438234/kodomowu.pdf
    • http://files.werebyrne.net/uploads/1/3/0/7/130740127/ca57665e4b56a.pdf
    • http://files.lifechangersinternational.org/uploads/1/3/1/4/131437472/buzijupogosados.pdf
    • http://files.rathfrilandmotorclub.co.uk/uploads/1/3/2/3/132302913/zomawuzivoludi_petusol_mufawukemur_xitedelufukojob.pdf
    • http://files.lutterburnfineart.co.uk/uploads/1/3/0/7/130739039/3163191.pdf
    • http://files.mothersyoke.com/uploads/1/3/1/8/131856331/2222389.pdf
    • http://files.shadysideofthetracks.com/uploads/1/3/1/4/131406762/9744250.pdf
    • http://files.myprojectgive.org/uploads/1/3/0/9/130969532/zazarumisiriki-risanipebijazev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://savakuwi.files.wordpress.com/2020/06/74922467564.pdf
    • https://nusovegot.files.wordpress.com/2020/06/gefomaxobejipabeton.pdf
    • https://ragorisi.files.wordpress.com/2020/06/zakajiwenonabajoxufaz.pdf
    • https://pedonatip.files.wordpress.com/2020/06/6167533303.pdf
    • https://molozujepaxu.files.wordpress.com/2020/06/68895548150.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.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_off00006570.bin
6221e97e4fcae67276a87abc94c5bf6830a0bbe4085a7bc246e38c52ff21223f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 5016 bytes
font_01_sfnt_off000076b1.bin
6836a870d691c85955c541a17bef6cd1131b72e25c4caae9e225319594023f4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B1 10636 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.