Malicious PDF — malware analysis report

Static analysis result for SHA-256 072d6ba1587ec629…

MALICIOUS

PDF

66.2 KB Created: 2020-08-31 13:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0b253809f95e4fc624aaaf9c0086b38 SHA-1: 47c8cfceb21ecfdb4ad5395d9b7d563b52f5d1dd SHA-256: 072d6ba1587ec629199ec0d8b55c908728aebc501b9d729d311f47a4e424aa4f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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/wix?keyword=sylvie+vartan+sa+maison+los+angeles
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/eaf48f_6f7611ef20374a3e85c4725bb579de89.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fe25d6526324c378ceb3e72ea834f89.pdf
    • https://static.usrfiles.com/ugd/b8c837_20120a4b11384d389bb93c1fe5809df7.pdf
    • https://static.usrfiles.com/ugd/ace02d_48a61ea972af460180a224031b1cfb60.pdf
    • https://static.usrfiles.com/ugd/a91264_6fcefa624fd04e7789bbe921fe72f768.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_3cbec39ef14144ecbe2f74f3ffa453bc.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_0582f223c98c4dc986aa6a6c32b894ec.pdf
    • https://static.usrfiles.com/ugd/3826db_7c9738043f6d44808c8f3774fd150513.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcdba029e50f433c80ea3aa3731eb84a.pdf
    • https://static.usrfiles.com/ugd/3d0627_12caa4b5968646028ef8f764f9b3a000.pdf
    • https://static.usrfiles.com/ugd/353d00_1b25bbc42c6b4c8fa687f168f90ef210.pdf
    • https://static.usrfiles.com/ugd/4b7290_6ed3eb619f814b75afa3247b1d0d3735.pdf
    • https://static.usrfiles.com/ugd/b8c837_39ba440767614faface86cffa9614acd.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_857ee98f2af64987adee5208875b1bcc.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/14451381612.pdf
    • https://cdn.shopify.com/s/files/1/0460/7780/4708/files/zabikufoditikepit.pdf
    • https://cdn.shopify.com/s/files/1/0436/5081/0014/files/livro_adriana_figueiredo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0306/files/gupokix.pdf
    • https://cdn.shopify.com/s/files/1/0432/4576/4770/files/warhammer_2_dwarf_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c07c.bin
a4770fcba5bc4fab6640d14e5ee34f4d6f8c16a206401f3b2a71fbc27076d330		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC07C 5272 bytes
font_01_sfnt_off0000d260.bin
d0d48217e7e3e68b5afe993d23a31e512cd463cdddaf3c13cd2d857270235096		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD260 12572 bytes

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