Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ad9b256faa887c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-12 07:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a9dcc795e235e9fde489e6f7c5a5a6 SHA-1: 6fcb0b83e0f1f7b30be7cfd39cbfd7df88c7a60f SHA-256: d2ad9b256faa887ca51e1d26910ce126e86fd9cd7931fe105521123c4a678459
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The ML classifier strongly flagged this PDF as malicious. The presence of a malicious redirector link suggests an attempt to lure the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=canal+av+desbalanceado+pdf
    • http://files.lighthouseorthopaedics.com/uploads/1/3/1/4/131455722/1840060.pdf
    • http://files.burntofferingsbbq.com/uploads/1/3/1/8/131871554/5b2c7092.pdf
    • http://nokiwuma.cveducators.org/uploads/1/3/1/1/131163960/wozaguvavojidob-nobiranudofatom.pdf
    • http://files.msseven16.com/uploads/1/3/0/7/130775446/pipukazogawema.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/fijoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/zinituk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/public_finance_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3644/9690/files/biblical_dream_interpretation_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/bless_the_lord_o_my_soul_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/venezukavituboj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/dennis_coon_introduction_to_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/entrepreneurship_skills_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/getegofupaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/7681844032.pdf
    • https://cdn.shopify.com/s/files/1/0431/4339/7525/files/vision_ias_current_affairs_february_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/73749019154.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/66983877496.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000733f.bin
7670a7d90faaac287d2843109c430d2da2e7e9a5f4f0d76acfee9907d2ded949
pdf-font-stream PDF embedded font (sfnt) at offset 0x733F 5160 bytes
font_01_sfnt_off000084e1.bin
3349b8def47c66f11cc462d804753cabc8b78b5441f31f3eb9571dae87d4443f
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 9916 bytes