Malicious PDF — malware analysis report

Static analysis result for SHA-256 41574b171779aab8…

MALICIOUS

PDF

36.3 KB Created: 2020-08-05 16:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70c73bb2c49b8a3cc2c05c1d2ca18347 SHA-1: 496c43673545f66596febca7fd250bf48806bcff SHA-256: 41574b171779aab81436558b6d95b9660e4275d045c2b9cb86a291464bc17a6a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt, likely using the academic paper title as a lure to encourage clicks on the malicious link.

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=journal+of+sport+and+social+issues+pdf
    • http://files.fsm-solution.com/uploads/1/3/0/9/130969434/84759fde92.pdf
    • http://files.elkriverjigs.com/uploads/1/3/0/7/130775045/zovofufozalo-zafimujogodo-sedoti-ravofe.pdf
    • http://files.sarahelizabethaldrich.com/uploads/1/3/0/7/130739528/7521452.pdf
    • http://woviw.lhseaglesbooster.com/uploads/1/3/0/9/130969352/ruwatugi_gawotekibabi_gixipifezuvaba_jaxolon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/dosexekikoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/mobefosefebodadadegabax.pdf
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/30380762709.pdf
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/guvegovukuruna.pdf
    • https://cdn.shopify.com/s/files/1/0438/8493/7384/files/vokobudolegojedogufuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/0920/2597/files/80893937579.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/daxedamevezopufobux.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/97930370525.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/nitumusanonekufik.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/vuxevapijasolasoduli.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/luwivajazodutugovasawevij.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/anthurium_care.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/85528471673.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_off000050d2.bin
877e5e33d03634535491019fb5d4cd5041d7dc81c35e8403507720c2461fc6b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x50D2 5140 bytes
font_01_sfnt_off00006260.bin
f304a694715120dfcac576118486d3e281134c131d3d1f6b070733c3eb9745ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 9880 bytes