Malicious PDF — malware analysis report

Static analysis result for SHA-256 c394df485e20d8c2…

MALICIOUS

PDF

53.9 KB Created: 2020-09-14 10:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03c64d90e67ec7c5c4963cc95ac8518a SHA-1: 4a5ee022ec8c1991d8e5e1ed0c0e2772f97b37cf SHA-256: c394df485e20d8c2ba576b7a603d6025e549f050f49338611897d1144eb50a1b
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=why+software+is+eating+the+world+marc+andreessen+pdf'. This URL is likely used to redirect the user to a malicious site for phishing or malware delivery. The document body, though heavily obfuscated, contains references to the same article title and the malicious URL, reinforcing the lure. The presence of numerous benign Shopify links suggests an attempt to blend in with legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=why+software+is+eating+the+world+marc+andreessen+pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/letter_name_alphabetic_word_sorts.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/lakuzufopubafoduxor.pdf
    • https://cdn.shopify.com/s/files/1/0435/7698/3713/files/8021549015.pdf
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/xutiduxatevo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/faringoamigdalitis_aguda_y_cronica.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c91929b26ac4a369e61d35d2d485e70.pdf
    • https://static.usrfiles.com/ugd/d7c203_82a48f548be8458b96a60767fd259329.pdf
    • https://static.usrfiles.com/ugd/6350c7_bbe359ec38da4866b9da1f69660654ac.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/63240651207.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/devalalunulofaleliser.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/50744572112.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/rinatetitegifatibevos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/52002486503.pdf
    • https://static.usrfiles.com/ugd/5b9365_2d5865393df8499fa81d4731b489a247.pdf
    • https://static.usrfiles.com/ugd/cc14e4_567567a5106b4cad965a8ad02b1fcc0d.pdf
    • https://static.usrfiles.com/ugd/bcd086_39b8a8b8e2d2455d925598b6c1914d03.pdf
    • https://static.usrfiles.com/ugd/943725_6be3971b5602408884fb2de5bc60bdc6.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077cf.bin
0a43c867d0d1b027b18d9dee5f523877f42e60787898f1baf97c293c3946f4b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CF 3536 bytes
font_01_sfnt_off00008480.bin
95d8bb55f0396225e4d2ed4081b2ec0a976e699fd88af58d1e40320cfef0e2fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8480 5564 bytes
font_02_sfnt_off00009757.bin
533d17df1c9d25e717877daff950aa3fa9892a9df20d06e0d995e5cf2edd277c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9757 10524 bytes
font_03_sfnt_off0000bb63.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB63 4324 bytes

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