Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ca76082f661889…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 08:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c54dae6a69a992d485e7bc11e3b744c0 SHA-1: 31c3c368012c9c3dbbda4e9e4944212eb7f5f0e0 SHA-256: 07ca76082f661889b6d80461cebb6b504b2cce4ff3622afc7ef36dcb2bca5c2e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link identified is https://ttraff.ru/wix?keyword=insanlar%25C4%25B1+etkileme+sanat%25C4%25B1+pdf, which is flagged as malicious. This suggests the document is part of a link farm designed to direct users to harmful 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.ru/wix?keyword=insanlar%25C4%25B1+etkileme+sanat%25C4%25B1+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/078c79_b50180dcf04243f3be3826e95c69bb10.pdf
    • https://static.usrfiles.com/ugd/804ff6_03fc9a12ec374d51851bb44659dfbbb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0618a34573440f1a81cb9f089fdd66b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8837bda811e84ac2887699eb6827e924.pdf
    • https://static.usrfiles.com/ugd/b8c837_59695fcc05a440de9294fc6648cc2293.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/wubavezamarasedalifazeveg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/git_add_flags.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/92654434478.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/fimakagutakumatapaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/tavina.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/zivonawesedasosubifoseni.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/annual_report_nestle_2020.pdf
    • https://cdn.shopify.com/s/files/1/0454/1834/8712/files/gta_vice_city_unlimited_money_cheat_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/5150/0188/files/98736989677.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/26687847766.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_off000060e6.bin
367b17fcf59c5ea996d4a9ec2a8d333af8561a50b9fcd67926123892a1674f81
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E6 5220 bytes
font_01_sfnt_off0000728e.bin
d5e5aa8b41ac6483a64659060f9de285e3d39371f8d4688a0f7bd3d7b43596b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 11864 bytes