Malicious PDF — malware analysis report

Static analysis result for SHA-256 1301c9f650c9de87…

MALICIOUS

PDF

51.8 KB Created: 2020-08-02 17:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 769ee923effbc90ef31a529b1c7c2614 SHA-1: f67deaf5d7f61ac6177bb824902d67f9557e9ef6 SHA-256: 1301c9f650c9de871aabe9a7c42caa9a042e2061ce15f8d287e85b6851ce0361
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though obfuscated, contains text related to a 'Mazda 3 service manual' and a URL, suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly supports the malicious verdict.

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=mazda+3+service+manual
    • http://files.tblountsports.com/uploads/1/3/0/7/130739783/21e13.pdf
    • http://files.wendymooreela.com/uploads/1/3/1/4/131407194/6925584.pdf
    • http://files.hightowerministry.org/uploads/1/3/1/8/131856134/kometepilijoji.pdf
    • http://files.momento.ie/uploads/1/3/0/7/130739060/lutalikaxa_fukimiziru_siwupipibose_vewatenux.pdf
    • http://files.rug-cutters.de/uploads/1/3/0/7/130739598/gukiwazizaletiropo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/wixamejawanoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/lelopupigigadololobegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/vutetolafezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxoku.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/pemitu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9501/files/64843298989.pdf
    • https://cdn.shopify.com/s/files/1/0437/6841/4370/files/batojefixubofivul.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/convert_mkv_to_mov.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/xedurew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/nurezawotejubup.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_off00007ed2.bin
43dc4cdf1f2ecdfa0088a73313e41f8ef3ed9e93f82e7428b96abb42366f22a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED2 5056 bytes
font_01_sfnt_off00008fe4.bin
d7532c2c46997285ccee44e95d73aa96357638286def720e6b74ca399c79d385		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE4 10480 bytes
font_02_sfnt_off0000b3d0.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D0 4324 bytes

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