Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1167d13e8b43ffb…

MALICIOUS

PDF

39.4 KB Created: 2020-08-01 04:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52923ea02c07d03c8217a19618b08cb5 SHA-1: a3aa36e892e49299c5e937b733a84d9e9712ab92 SHA-256: f1167d13e8b43ffbf0185c7b326c7aec3118780bbaf4643c4b5bb3964365c167
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/pify?keyword=happy+wheels+apk', suggesting a lure to download potentially unwanted software or malware. The presence of a link farm further indicates malicious intent to distribute harmful content.

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=happy+wheels+apk
    • http://files.shelbystangatreasures.com/uploads/1/3/1/3/131398143/nuwepanomov.pdf
    • http://files.mybenstratton.com/uploads/1/3/0/7/130776126/salosenite_zelekuduketaxu_kilegofofep_doganus.pdf
    • http://files.stephenedwardmazujian.com/uploads/1/3/0/8/130813906/giwadub_sukujakelog.pdf
    • http://files.blendedeo.com/uploads/1/3/1/6/131606407/fijut.pdf
    • http://files.ridetripapp.com/uploads/1/3/0/9/130969897/kigubakazen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/rasewisixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/bosijiwojufefaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/palafabinogedewimifot.pdf
    • https://cdn.shopify.com/s/files/1/0438/6465/3984/files/fetojod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/78844630967.pdf
    • https://cdn.shopify.com/s/files/1/0437/3338/5381/files/fujugupiwejidixapokuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/duferilexezeresikazipar.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/87245782530.pdf
    • https://cdn.shopify.com/s/files/1/0436/0028/1762/files/79406365031.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/99295117606.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_off00005c42.bin
b63bb3603527ab369d2c00b866dc3dbdecb51a8d946849a614cc2e7654c15573		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C42 5032 bytes
font_01_sfnt_off00006d73.bin
e8d9c904e33f73fcdcdd99528be51f428f01ad956273829b12030535e750a2a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 10352 bytes

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