Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c5cbab5a2a754c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 22:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ec77a110a823ae990b5242ac3038483 SHA-1: ab160f66ef7ff3d7f6990e3fdfee87b5f3bda660 SHA-256: f5c5cbab5a2a754c33a5ad1f25dc2952cb9deb4d7a3cdf4b7f99e05a4a9766b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for credential phishing, specifically mentioning MFA or one-time code harvesting. The embedded URLs, particularly the one leading to ttraff.cc, are highly suspicious and likely serve as the initial stage for delivering a malicious payload or harvesting credentials.

Heuristics 4

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=26+as+full+form
    • http://files.meridaanderson.com/uploads/1/3/1/4/131452842/968048.pdf
    • https://cdn.shopify.com/s/files/1/0431/3913/7702/files/rukop.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1184/files/35945541174.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/23051563729.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/40563781878.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3109/files/royal_baking_powder_recipes_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6159/8616/files/98376146600.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/asthma_guidelines_canada.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/terraria_gameiki_mod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/kidolaxuxozojuwadi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/zaxidasatisakuwol.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_off000064e6.bin
f0b8f463aa7a82ba0c86c6f175cc50286dc1f696ca2c0c8df347160227694ea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E6 5104 bytes
font_01_sfnt_off0000761c.bin
a48b3c68805ee5841d67a42432f20a51011e3a47f24d99cd7bc379dc0c34af77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761C 10780 bytes

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