Malicious PDF — malware analysis report

Static analysis result for SHA-256 710206d3bb058733…

MALICIOUS

PDF

177.7 KB Created: 2020-09-01 00:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3458f095d06a22dd93fdac3f1769708 SHA-1: aafdd2f309760766420f94c209da2094c77faae2 SHA-256: 710206d3bb05873350dd79f4d75f4a9a5fb14c0c4400ad4e8ed5a2d1cb01f1d9
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a phishing or malware download site. The document body, though heavily obfuscated, contains text related to a game guide, suggesting a lure to entice clicks on the malicious link. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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=fgo+dead+heat+summer+race+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/99965f_0f7d6769b4c6476da67c2cc4cf23ed8d.pdf
    • https://static.usrfiles.com/ugd/f4de5e_e8883625f9d84de2b0496f7b0d8c14ff.pdf
    • https://static.usrfiles.com/ugd/e5412a_d9bd813ef80e47b8b444051290e72d62.pdf
    • https://static.usrfiles.com/ugd/a59130_af5c0a059d8343b29dd37ea8863b5a31.pdf
    • https://static.usrfiles.com/ugd/b8c837_f700d46583144fc38939bec58969a510.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bfe05a77a1b4d5eabd0d05d04a283b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eb25f9902e447c89147184e0b68948f.pdf
    • https://static.usrfiles.com/ugd/76156b_678e9ecbd51a49848cd98c32be1842e8.pdf
    • https://cdn.shopify.com/s/files/1/0448/1312/3744/files/91992108130.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/68123637256.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3398/files/auma_sar_actuator_catalogue.pdf
    • https://static.usrfiles.com/ugd/89c6ad_b492d132bdf44d11b35a5ed83ff76b64.pdf
    • https://static.usrfiles.com/ugd/b8c837_777f775b845b4d4dacec14420ea13f7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2194ea78d2544d08ad7d57aa5fd3d928.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f197.bin
141d330e059d7d4dde6e1c37fd9ea91c7ef34093cdb7fe202eda167070990c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F197 34800 bytes
font_01_sfnt_off00025dc1.bin
84df09e951c3d1efe4e44d9260f8a97e44f2cbc1c85f3100608118e79fc361a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25DC1 5276 bytes
font_02_sfnt_off00026f8c.bin
bfbbe037d1e223355ad13c263565cabdab2a30d9d290dbec2160e02ce6663834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26F8C 16756 bytes
font_03_sfnt_off0002a31f.bin
fdfa825cc5decdd302fc95d30b1420aeb3be2407a7a33cbfb9e1f022977d91e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A31F 16208 bytes

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