Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1dfc7e9b04b2e9f…

MALICIOUS

PDF

37.0 KB Created: 2020-08-13 23:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b32d32c033419e0e6f1cadf3bd33f56 SHA-1: c3ebf8e1690c75f7ab7136e3816e82fad93c94d6 SHA-256: d1dfc7e9b04b2e9f8d727c7fa4e868190181686899d562c69861a75aa194c648
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, specifically pointing to 'https://ttraff.cc/pify?keyword=electromagnetic+spectrum+review+worksheet'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains hosting PDF files. The document body, though partially corrupted, contains text related to an 'Electromagnetic spectrum review worksheet' and includes the same malicious redirector URL and several Shopify PDF links, suggesting a lure to disguise malicious redirection.

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=electromagnetic+spectrum+review+worksheet
    • http://files.minagcapital.com/uploads/1/3/1/6/131607522/zejojibosake_levupufivaxuvix.pdf
    • http://zisib.ianwarder.com/uploads/1/3/2/8/132814930/rotipugewux.pdf
    • http://files.rta-ot.com/uploads/1/3/0/7/130775870/2206456.pdf
    • http://dupobera.czarproduction.com/uploads/1/3/0/9/130969077/27f702c9274702.pdf
    • http://files.communityactionboonewinn.org/uploads/1/3/0/7/130775116/4e7630651.pdf
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/61849544637.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/47693697228.pdf
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/list_of_algebraic_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/58057949138.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/46427258621.pdf
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/13721932164.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8469/files/32210103060.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/16360827065.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/liwiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/vmware_vsphere_6._7_install_configure_manage.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/galletas_de_la_suerte.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/68501626419.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_off00004699.bin
4914725fe6213d82efe09d14b8bb7231839201fdb24b107b2695aa71ee5e8907
pdf-font-stream PDF embedded font (sfnt) at offset 0x4699 5400 bytes
font_01_sfnt_off000058d7.bin
5861ec34372de26739607f5fd448319cebbdfbd7fa5d4050e8b978bac542215d
pdf-font-stream PDF embedded font (sfnt) at offset 0x58D7 9364 bytes
font_02_sfnt_off000078b9.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x78B9 4324 bytes