Malicious PDF — malware analysis report

Static analysis result for SHA-256 58096fc8d668ab58…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 09:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01a73d866f4be85b7ead41d9c9c605e2 SHA-1: 4ab8e02a11fb57f00b46b8f44a0e0e14147653de SHA-256: 58096fc8d668ab58ef2aee4b1c4e17754925f79c179f26782d41b2b0c901d62d
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'acidosis metabolica' and the 'wkhtmltopdf' tool, suggesting a lure to disguise the malicious intent. The presence of numerous external links, including the malicious redirector, indicates a campaign to drive traffic to potentially harmful sites.

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.com/pify?keyword=principales+causas+de+acidosis+metabolica+pdf
    • http://files.spazhealer.com/uploads/1/3/0/9/130969377/217756b4049d4.pdf
    • http://dolumuwuw.salandlou.com.au/uploads/1/3/0/7/130776485/5411653.pdf
    • http://files.dukecaldwell.com/uploads/1/3/0/7/130775596/6153286.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/70966177675.pdf
    • https://cdn.shopify.com/s/files/1/0438/6262/2358/files/42257902326.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6074/files/putojapesewevanikegerete.pdf
    • https://cdn.shopify.com/s/files/1/0433/6094/4296/files/scraping_numbers_from_html_using_beautifulsoup.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/ubuntu_16._04_startup_script.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/empirical_distribution_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/86342330387.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/bonepuzenubaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4805/8536/files/91193457394.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/75999315104.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/75717893922.pdf
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/bouvier_s_law_dictionary_1914.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/93152980417.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000613a.bin
09744cc3f0b360b03d557a050180624560ce3469fdefc6d0bf998c9debf5f3f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 5444 bytes
font_01_sfnt_off0000738e.bin
40e740c1c3e2b7f316ea4be31473d46e6b5fb9800fc5e2ee070e6fb20b0ec5ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x738E 14780 bytes
font_02_sfnt_off0000a0a0.bin
530ff5b075befe60ee741b28edfc3ef5dbe104a983a394340679dcffc81e9b6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A0 16064 bytes