Malicious PDF — malware analysis report

Static analysis result for SHA-256 e376dbc1f065dd63…

MALICIOUS

PDF

45.3 KB Created: 2020-08-01 23:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cc00fea96ecc900874b93bfcaac2915 SHA-1: 50b909e51d7b19b7d25a298bff3619e2f55b0c21 SHA-256: e376dbc1f065dd635895566c7d42151974a0475ccbf06e61204c2cb6a8b2b3dd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=header+files+c%252B%252B'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=header+files+c%252B%252B
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdf
    • http://files.elizabethsboutiques.com/uploads/1/3/1/1/131164431/2732552.pdf
    • http://files.nocontractppc.com/uploads/1/3/0/7/130739590/wivagevejabonanevoz.pdf
    • http://files.greysriversports.com/uploads/1/3/1/6/131606291/turerot.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/maxokubisu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/jirus.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/40405938916.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/how_to_make_potions_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0431/5047/5413/files/vekisisabujaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/pizulopapalogurujatif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/64390995073.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/79828178830.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/interbridge_late_night.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/lakexezilorolexamizunidur.pdf
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/jujugoxomikudub.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/9294255432.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_off00006b79.bin
f67964c421ac175df2f9364e7d7d80ed659a1b311d5d4e2e6fbf442fe2f22fcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B79 4976 bytes
font_01_sfnt_off00007c72.bin
700d951b86816fb8131d5ac1098eae6a52624d7ffe306702d2d02eefdc68bb7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C72 13744 bytes

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