Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3747199b1f1489d…

MALICIOUS

PDF

71.8 KB Created: 2020-08-30 06:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fa6e978838349a8e8ba9f9be56015855 SHA-1: 9fc5a6b747ece1f2e566c072013d348b0cb35ea9 SHA-256: e3747199b1f1489dccc4bbe2575fb8df13bc61b47095015e520105e2b777f1c1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.cc/wix?keyword=%25D8%25AA%25D9%2588%25D9%258A%25D9%2588%25D8%25AA%25D8%25A7+%25D9%2583%25D8%25B1%25D8%25A7%25D9%2588%25D9%2586+2000%25D9%2585%25D8%25AD%25D8%25B1%25D9%2583', is highly suspicious and likely leads to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous external links, further indicating malicious intent.

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/wix?keyword=%25D8%25AA%25D9%2588%25D9%258A%25D9%2588%25D8%25AA%25D8%25A7+%25D9%2583%25D8%25B1%25D8%25A7%25D9%2588%25D9%2586+2000%25D9%2585%25D8%25AD%25D8%25B1%25D9%2583 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3d9449bcc04a4a73972dae8474ec9713.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_dd30a3165401484da617c59abe85d728.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ea78e0_61bc274135ae4f599da8da39530bef63.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5883/0229/files/11997955309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/49597030162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/carplay_android_auto_aftermarket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1240/1815/files/43360018001.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0ebc1f_c35393cce4c04aa9ae6c732ec72d3f83.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3287f6c608f146e5b9d64f30e8c8d0a0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_01e5e11a8596491b9dd047dc08053132.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ac701_0614f9760ec6489e93b553786583cc30.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0047a4_ba4504fac9ed4c45929114a385fffc56.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/63d3ad_72bf4920cb4e47ce86dc2a2971a2b19f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_4c2e045a93f94478b4936269a56ed123.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000d80a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD80A 31676 bytes
SHA-256: a2b51313d77993651d758ffd8e62137b46b4a34ca3bd60928ace0393ed295497
font_00_sfnt_off00008dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEC 4340 bytes
SHA-256: 81f00ade6b75926c2a36a53420d089bcb8e03490ec15908729a3eaa7b61bb43f
font_01_sfnt_off00009cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBA 17484 bytes
SHA-256: f968b6d5f92d7898e9c1eae9948da05ec63f2bf7e1339b73e93fb7cf34902770
font_02_sfnt_off0000b6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B4 9796 bytes
SHA-256: 521d023a913dd221ba1aa77f7a073dc4c6e15c56caa4e48720a607a9c1b03c1c

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