Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2353368154926e…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 13:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64c6318578642d401f7416bd9ebd5491 SHA-1: 3fb8d806c49e8fc77ba6427d598b29a06b2eb749 SHA-256: 9e2353368154926ea4c953dcc0e9e3519ec952bf6e7dc58ddfb332691acb93b4
128 Risk Score

Malware Insights

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

The PDF contains a link disguised as a software keygen download, which redirects to malicious infrastructure. The PDF also hosts a large number of links, many pointing to benign Shopify URLs, but also includes links to unknown domains that are likely part of a link farm or SEO poisoning campaign. The presence of a visual download button further supports the lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=autocad+2013+keygen+64+bit
    • http://wudos.sabatiniarted.com/uploads/1/3/0/9/130969690/c4918de.pdf
    • http://files.teachingsofthemasters.org/uploads/1/3/1/0/131070646/f469ce4.pdf
    • http://files.hillsborofire.org/uploads/1/3/0/7/130776254/talavuteruz_tujudegovasok_loget_fuxidelige.pdf
    • http://files.cadrc.org/uploads/1/3/1/4/131452949/5725321.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/xagibotifogi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/34408264068.pdf
    • https://cdn.shopify.com/s/files/1/0454/2077/3544/files/vedic_astrology_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdf
    • https://cdn.shopify.com/s/files/1/0439/3467/9208/files/top_engg_colleges_in_karnataka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8746/9469/files/treatment_of_diabetes_mellitus_type_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/47887695581.pdf
    • https://cdn.shopify.com/s/files/1/0436/8020/2905/files/factores_y_riesgos_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0450/7457/9608/files/projected_audio_visual_aids.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5187/files/que_significo_la_caida_del_muro_de_berlin.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_off000066e1.bin
cfcd547610d042b8b609915034c8740c355f9a76592594b082e7b5a768d60ee4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 5828 bytes
font_01_sfnt_off00007ad7.bin
8d5840995a08d28c434faa952d8539a99cc511407673855127d885cf97ded1e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD7 10700 bytes

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