Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b4b9d7da71a814…

MALICIOUS

PDF

35.0 KB Created: 2020-08-17 02:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 732cf6b19bddd0917ff65810f44a88e8 SHA-1: e8c82744a04bc6669487216d03b311271d44d310 SHA-256: 22b4b9d7da71a814c5bf297e239beb604f556bd4ad93e5318de5c8da4347936c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector, specifically `https://ttraff.com/pify?keyword=activex+control+for+excel+2013`. This URL is presented within the document body, disguised as a lure related to Excel ActiveX controls. The presence of a large number of embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious URL. The file's purpose is to redirect the user to a potentially harmful site.

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=activex+control+for+excel+2013
    • http://demoxum.amityhealthcentre.com/uploads/1/3/1/3/131380429/bebisik_rotesuduboso_nuforuzakojubug.pdf
    • http://files.pieterspinder.com/uploads/1/3/2/7/132712326/rakonoxutanaxotidus.pdf
    • http://files.leedsmayi.com/uploads/1/3/1/0/131069992/kuketizunarefamesesu.pdf
    • http://files.alexmunroewrites.com/uploads/1/3/0/7/130776111/dogogiwoze.pdf
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/22261308589.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/53230154371.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/modal_auxiliary_verbs_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5591/4918/files/amandemen_pancasila.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/bukitimumonifurod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/35487218119.pdf
    • https://cdn.shopify.com/s/files/1/0429/0913/9111/files/logos_pathos_ethos_kairos_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/puvaxorevaveribo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/jafemejotewa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/2851518695.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/tozejurufoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/jaxofedageguj.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/38333551893.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_off00004c6e.bin
599f929c1c806276e091ecad6abb5d2a04fd4852516bf7e308d56edd479a7c3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6E 5096 bytes
font_01_sfnt_off00005de4.bin
c59db6dc10707c78174b8325431a8dcfba0aeb2b605fb85c3bda9d97cc6f1a98
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE4 9912 bytes