Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8798a8fcbb5e089…

MALICIOUS

PDF

77.9 KB Created: 2020-08-05 16:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3c06fbfafd97a36406134eb49f159ce SHA-1: 007595fd3d2eca4370974ce4253861b8b40457c0 SHA-256: d8798a8fcbb5e089e142a740a47afae87c5a21140825c282b00b836a80ae855a
168 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. Another heuristic indicates a lure for MFA or one-time code harvesting, suggesting a phishing attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ashanti+kingdom+pdf', which is also flagged as a malicious redirector. The presence of many external PDF links also points to a link farm used for SEO poisoning or distributing malicious content.

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=ashanti+kingdom+pdf
    • http://nesogozu.funkyjunknl.ca/uploads/1/3/2/6/132696414/vixupulewubevew.pdf
    • http://files.jack-woods.com/uploads/1/3/0/7/130775292/nedimaxusivip.pdf
    • http://files.auramoore.com/uploads/1/3/2/6/132682655/6ac73c4e6524f26.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/the_good_morrow.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/gekodezuximozum.pdf
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/91898020955.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/79742997798.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0435/9510/4418/files/daruxolanovagapeloko.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/debubexinurizeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/lavap.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/pokusuminebanuvetuvivawi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/kemafipu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/31133931664.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/vitamulonurirakekatemis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.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_off0000f565.bin
421398496e94b7caa153099f14a6651c321f2de4b4fafbade98fafd80cf6f09a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF565 5380 bytes
font_01_sfnt_off00010795.bin
3e15fe861da8cbd11873342cb9d58061bd4175172074b0dac3734b985c333205
pdf-font-stream PDF embedded font (sfnt) at offset 0x10795 10216 bytes