Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c0a7593b99e8ec…

MALICIOUS

PDF

50.8 KB Created: 2020-08-01 12:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4306d859093453b1b64744c3d543c6ed SHA-1: 516aa7495f07ce8e8135da39d4e1f854792ffed6 SHA-256: f9c0a7593b99e8ec0b28e9bd85fb6aec9a3024f115aa2e7f8455dde0491802d7
120 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, with a primary URL pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'gmail is slow' and the malicious URL, suggesting a phishing lure. The presence of numerous external PDF links further supports the link farm heuristic, indicating a likely attempt to distribute malicious content or phish users.

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.com/pify?keyword=gmail+is+slow
    • http://files.impactk9usa.com/uploads/1/3/2/8/132815979/nubatuxa-zotozibupi-faperaxuj-xexaba.pdf
    • http://files.learningfromstroke.com/uploads/1/3/1/4/131453989/1514057.pdf
    • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.pdf
    • http://files.makealbertagreatagain.shop/uploads/1/3/1/0/131070178/jevowizamoradi-latijifimu-kigalasofe-tepamejunise.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/wixusezalepesox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/22828010815.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/vamokibugoratamebovudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/14075920458.pdf
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/56947000764.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/21020748462.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2057/files/bekogubilubokadujijex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/68579665196.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/carrier_air_conditioner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/zudojodusikapiwakejujiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/tenobizopaxaf.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_off00008ac2.bin
d79dfa6a5876406462fd5bee3452eba8ea7a31b1d15b9bd85957c6b2f772ca25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC2 4856 bytes
font_01_sfnt_off00009b44.bin
5b10ef16213d85983bc08f68084eb51083084d3c3b37eabfe31495ab7505137c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B44 10260 bytes

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