Malicious PDF — malware analysis report

Static analysis result for SHA-256 600bcae64986f7c7…

MALICIOUS

PDF

41.0 KB Created: 2020-08-22 14:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acedf7b85407b383274bf53002b8913d SHA-1: dadb0954067c6e7d8af4703633f462cf87972c97 SHA-256: 600bcae64986f7c70b33622052c9b745aaf1abbbf9057740ebb20225ff4f72f3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. This URL is presented in the document body and is likely intended to lead the user to a malicious site. The PDF also contains a large number of external links, many of which are hosted on Shopify, suggesting a link farm or SEO abuse tactic. The ML classifier strongly flagged this PDF as malicious.

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=automatic+synchronization+android
    • http://renewoson.gymtymenow.com/uploads/1/3/1/8/131856158/7619597.pdf
    • http://rodusilat.nc-xh.org/uploads/1/3/1/6/131637881/8600646.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/93168325703.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/weather_lawndale_ca.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/defusadewiweta.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/60098750555.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/muxojijozebisafix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/17921638381.pdf
    • https://cdn.shopify.com/s/files/1/0461/9465/5390/files/iamotus_bluetooth_driver.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/23137697366.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/72848509339.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/49839721997.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/tobulidipafunenuta.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/tunefupolojus.pdf
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/budumodijozurarinojufesuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/nudenugujozusureluk.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_off00006099.bin
fc8eb0be96bc03142af28b0f177ed6196823705ab6ea09f9c3cf1d430ab71edf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 5288 bytes
font_01_sfnt_off0000726c.bin
d40028e9dc81be0ba1a1b8163978d2db811ad166e23c5cb2cdfe6f6437c61f24
pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 10632 bytes