Malicious PDF — malware analysis report

Static analysis result for SHA-256 62118fc48bae621c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 21:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43072bf561a29f069ef05765b9d791a0 SHA-1: 787a49273fee892c513a0a635893b8916e5e938a SHA-256: 62118fc48bae621c3ff06c7a6ed8e8ad43733eeb1d71e402230af5a99cad0439
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a link farm, and one critical link identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.cc/pify?keyword=fat+loss+forever+biolayne+pdf' is the primary indicator of malicious intent, likely leading to further compromise.

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=fat+loss+forever+biolayne+pdf
    • http://rigaki.oakriverchurch.com/uploads/1/3/1/3/131381679/0c550c.pdf
    • http://matupos.tommybarrettbroadcasting.com/uploads/1/3/0/8/130874601/9903461.pdf
    • http://wilefuku.guysalvidge.com/uploads/1/3/2/6/132681504/1f0cb02b8ef22.pdf
    • http://files.jessicanye.com/uploads/1/3/2/8/132815828/572401.pdf
    • http://files.emergeinmarketing.co.uk/uploads/1/3/1/4/131409884/cece257.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/75797491662.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/ganapati_atharvashirsha_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/kojuveninejinazegosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/google_calendar_embed.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/fesefewowukutopewitop.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/67758431559.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/gotemir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/61730985261.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/79509987383.pdf
    • https://cdn.shopify.com/s/files/1/0433/6291/0376/files/jepozowotoliwexegamur.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/bohemian_rhapsody_piano_sheets_free.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_off000067a6.bin
ee8f1a06a5c92baacf8f331884301e30b12ec1acad647cacf4e214a5fbba80ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A6 5292 bytes
font_01_sfnt_off000079bb.bin
095d94bbb8d6781b187ca29562243aae1301f043e361038b34a45877a5a794dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x79BB 10160 bytes