Malicious PDF — malware analysis report

Static analysis result for SHA-256 777b11a2d0ce5a72…

MALICIOUS

PDF

392.2 KB Created: 2020-09-03 19:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26926833b17ba57ed855c87141d287ed SHA-1: c3bd9a84d3e435c38228653adbf596703832f877 SHA-256: 777b11a2d0ce5a72f10388f261a9652157362acc5b369663e619e4c010bc808f
102 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a search result for a PDF, combined with a heuristic indicating an urgency lure. This suggests the document is designed to trick the user into clicking the malicious link, likely to download a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=pathfinder+bestiary+2+espa%25C3%25B1ol+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/dugokivematar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24501063531.pdf
    • https://cdn.shopify.com/s/files/1/0448/1551/5805/files/advanced_bodybuilding_routine.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/zebugalafofefiledojuve.pdf
    • https://cdn.shopify.com/s/files/1/0435/8589/6609/files/seus_shaders_1._7._10.pdf
    • https://static.usrfiles.com/ugd/b8c837_acfffb4ccc3644329500c1ea517f5368.pdf
    • https://static.usrfiles.com/ugd/9757e7_7e4f85324dd148b5b79854cb4a26f8ba.pdf
    • https://static.usrfiles.com/ugd/314c35_fd94c740a85c47809ca68c57dc1723a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_34572aa648de458f823d9caeefdf3df6.pdf
    • https://static.usrfiles.com/ugd/d94ae5_b342c036acda45aaa8373f8804112aca.pdf
    • https://static.usrfiles.com/ugd/23924c_16ea7016917c4c8ba6733ffec27f7b2a.pdf
    • https://static.usrfiles.com/ugd/33a2e4_2002d3b550d2452ab4df9d172c7d6500.pdf
    • https://static.usrfiles.com/ugd/f63f29_94198ff8f5a142a6bde8e951011ec342.pdf
    • https://static.usrfiles.com/ugd/72b0e7_1f75fea28ffc4f63a60420212e603457.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_off0005ba79.bin
71c95f7dfe3e13e1063bce8112c119f1ec09ee1efa5cd38531ba706d5ec97749
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA79 5504 bytes
font_01_sfnt_off0005ccd9.bin
0cd1baec675a0c7c30ce60263300e9546888ae12d048333403e6eeed6950e1e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCD9 16960 bytes
font_02_sfnt_off000600fe.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x600FE 4324 bytes