Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ecf73428d9e67f…

MALICIOUS

PDF

91.3 KB Created: 2020-08-21 23:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7660e93e1be394acc1b80e23b6de8387 SHA-1: 4a3d778f1f1898fc0b183f712c1b88500f711503 SHA-256: 02ecf73428d9e67f723567ebe41c8897383a69790525db380e98d83d9651a7d5
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One prominent link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a game guide and the malicious redirector URL, indicating a lure to trick users into visiting malicious infrastructure.

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=pillars+of+eternity+ii+deadfire+class+guide
    • http://files.sfvlsa.org/uploads/1/3/1/6/131606402/819e1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/1163/6381/files/chuck_angry_birds_transformers.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/dojukije.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/bebuvomafipuzopulivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9198/4535/files/lolawizuvekilewibubezuvok.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5073/files/angielski_w_tumaczeniach_gramatyka_2_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/30818952188.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/pedagogy_vs_andragogy.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/nulimovosibizarup.pdf
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/23882668345.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/baybayin_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/wuxuwekepek.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/zexutekezonabamebe.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_off00011cdd.bin
126ccfb64f02ef2cb8d6bac1c271d2dfbeb25caa1839f0a1c36400195062875f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDD 5176 bytes
font_01_sfnt_off00012e7c.bin
2df9fd10fbd39d442ae8afd81f6374cf237bbb45eb57355b970c29a748ed1339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7C 10192 bytes
font_02_sfnt_off00015165.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15165 4324 bytes

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