Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9977c686d7cd608…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 10:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dacf6b8db8f59a9141d1f13e70120f5 SHA-1: ba6a46110be01f0cc00da2b858f5189f804faf2c SHA-256: a9977c686d7cd6083ee26ac41af9aa59b46ef4f63df8c7df541f8b0c1a31ce36
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically flagging a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=salat+al+istikhara+islamqa', which is likely intended to lead the user to a malicious site. The presence of numerous external PDF links also suggests a link farm or redirection strategy.

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/wix?keyword=salat+al+istikhara+islamqa
    • https://static.usrfiles.com/ugd/f46427_315f7cb2990f47d9adfe67189b0e0798.pdf
    • https://static.usrfiles.com/ugd/b8c837_84f8ae46630a4b688afbf3f941bb323a.pdf
    • https://static.usrfiles.com/ugd/cb5dea_c77f485db9764de5916e82327e8cc3ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_617fdbd2671548e68497e571a57e0c68.pdf
    • https://static.usrfiles.com/ugd/7f929b_ecdd67564a174027a094d32a811cdf43.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/nekas.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/wokupujomijev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/41525546716.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/87814702466.pdf
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/ge_profile_arctic_refrigerators.pdf
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/lectures_on_quantum_mechanics_weinberg.pdf
    • https://cdn.shopify.com/s/files/1/0448/2547/7277/files/critical_legal_theory.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/55905586397.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/97216374998.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_off00005edd.bin
995aebd815f51cb3d061283ef9ef82db43c60c2807278efa120ed5b904c079cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDD 5220 bytes
font_01_sfnt_off0000706b.bin
ebad17b553e39122bff042d8939add129e01cdc6bab81b540ce3bcb2e425d52b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 9896 bytes

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