Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b7a7e1f366a90f5…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 00:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 940c4ec8ad86de1f35aebb9d539f509e SHA-1: 39ccd88abb901c0ffb560cbcec950ff11c45c7a1 SHA-256: 3b7a7e1f366a90f524cec0b2afdcc2f0f792ec9ebaed068f038a48d35d319f92
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=lite+brite+sheets+printable+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious link likely serves as a lure for phishing or to download further malicious content.

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.ru/pify?keyword=lite+brite+sheets+printable+free
    • http://files.ourladyoflourdesparish.ca/uploads/1/3/0/7/130775653/xubotikeke_pakizos_pumevepifi.pdf
    • http://files.fyldecoastplayers.com/uploads/1/3/1/1/131163898/8941249.pdf
    • http://wixemidot.creativesheetmetalworks.com/uploads/1/3/1/4/131408024/jodovezobanamituso.pdf
    • http://jadutuduv.graywaycreations.com/uploads/1/3/2/6/132695328/7360580.pdf
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/tirifodizozagadeken.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/69046094026.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/aldi_talk_aktivierung_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/8537/9237/files/how_to_master_airbrush_painting_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/53713243206.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/83917848432.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/25125944169.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/minor_cofactor_and_adjoint_of_a_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/dexewimixunarix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17612659915.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/upkar_film_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/50264919766.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/potanufak.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/tennis_elbow_exercises_australia.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/
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ade.bin
334fea37579a57ce69ad46e4395184a3d213e3301bc8793adf30c89d6832f09d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADE 5072 bytes
font_01_sfnt_off00007c0e.bin
de6d52a5f42fee00cdccdb6abc571c3e0b9b6fed043bbbf2314a8482ebf7f3af
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0E 10420 bytes