Malicious PDF — malware analysis report

Static analysis result for SHA-256 8074bc9ecb5596ae…

MALICIOUS

PDF

115.4 KB Created: 2020-08-30 11:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dd851bcd9587f495e09ab1cdd1df989 SHA-1: 21141dc17143b457b6a54ec3089cbf92008c25e2 SHA-256: 8074bc9ecb5596ae5b3cf1c4ebc673762a432676f2b12a5a6e3d6da4697c98bb
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm for SEO poisoning or to distribute further malicious content. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector heuristic. The presence of MFA lure heuristics indicates an attempt to harvest credentials or session tokens.

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/wix?keyword=whirlpool+duet+sport+washer+f21
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/85048798129.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/fronting_speech_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/52924409662.pdf
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/lebot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6039/files/xobugupazuvenebituzava.pdf
    • https://static.usrfiles.com/ugd/dc98cc_043eb4763d9c4fe6bb5491d9626b5e3d.pdf
    • https://static.usrfiles.com/ugd/18f527_1ce419a16a1346eeb189e9e4dfaf01d2.pdf
    • https://static.usrfiles.com/ugd/9374a7_15fb7ccf93ab42e1b5c0e3b188ff6a2a.pdf
    • https://static.usrfiles.com/ugd/43d598_01ba1df23d43476b97d2dead42ffa6ee.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/10615555127.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/99451108941.pdf
    • https://cdn.shopify.com/s/files/1/0452/3845/2381/files/fitepatuxoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/kenorebotabatetoniv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/lewaminadan.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_off000188cd.bin
a64c52866315b889b0f0e5412a0b2db6afeb011eebfdf96031a76bacfc119fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x188CD 5416 bytes
font_01_sfnt_off00019b4f.bin
aeddeff8d94a915d5c59d7ca90eccf47a48e3567c0ee88b112672c68f1e98ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19B4F 10900 bytes

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