Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ae0198e74db14c…

MALICIOUS

PDF

37.0 KB Created: 2020-08-18 21:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fd24dae490f1277194fb36eb92074a8 SHA-1: 2ff2a3486e42f07321c27c481a6482420b6bbf1a SHA-256: 70ae0198e74db14c7fd66f1036a819899eec95b186e24de232d76b0d8a9ded2c
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, ttraff.cc, which is likely used to obscure the final destination and potentially deliver a payload. The document body, though heavily obfuscated, contains the same URL and text related to a 'simple chat application', suggesting a social engineering lure. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a link farm or SEO poisoning attempt to increase the visibility of the malicious redirector.

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/pify?keyword=simple+chat+application+in+c+windows+form
    • http://files.lavingtonurc.org/uploads/1/3/0/7/130775727/xotasoxorum_mobuzif_wirari_lejovalapedol.pdf
    • http://rizegale.subudbooks.com/uploads/1/3/1/6/131637016/95a0c3362f66c0c.pdf
    • http://guvobi.eastbayspacover.com/uploads/1/3/2/6/132681026/wojedumik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/51751079869.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/kiwenekajerilutovaji.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/cset_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/mekomumilu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/58625581194.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/fufunapabuxubefavadapaves.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1621/files/tasudowenivugazowusoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/77002609425.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/56135748443.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7780/files/weekly_budgeting_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/xiroxoxukexiwulo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/palladium_robotech.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/juwekadarubekitetafaxek.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_off000050e0.bin
ae17ba4b5d9b8c4b86b3e2859b0c3bdaebf713dbcf021f1939954bc622c3e9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E0 5588 bytes
font_01_sfnt_off000063c0.bin
1f56ccaf72ad08431e7db33a96fbefead47b7b4437f3c78dad64f196115961fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C0 10272 bytes

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