Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff610424019d6af0…

MALICIOUS

PDF

86.1 KB Created: 2020-09-03 09:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 422c5236ffade260ddc4a91e229f5235 SHA-1: 39f68ffc4cfea69de8f64c42c8d790c7273fc7af SHA-256: ff610424019d6af06dc694e5c1810010d037199d3037f93fbd5f6fc9c39ef592
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=video+trimmer+android+source+code'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, with 'https://cdn.shopify.com/s/files/1/0462/4426/6144/files/vixax.pdf' being the first listed. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. No scripts were extracted from this sample.

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.me/wix?keyword=video+trimmer+android+source+code
    • https://cdn.shopify.com/s/files/1/0462/4426/6144/files/vixax.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/how_to_become_a_good_english_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/guwekojapejadizibukuso.pdf
    • https://static.usrfiles.com/ugd/b8c837_95797f8b807143c5af5fd41e7d5949e8.pdf
    • https://static.usrfiles.com/ugd/1cc777_a581a0ca3fe54ce7be5eafd10d996dcb.pdf
    • https://static.usrfiles.com/ugd/99afdc_c49c8a1d3bb5457b8a839facbf3e5024.pdf
    • https://static.usrfiles.com/ugd/0adedf_2fa1dc9702d34bab9f1ecae69c8738f1.pdf
    • https://static.usrfiles.com/ugd/d54300_82a168e6cb9c4cd48da7c9583ee8cc69.pdf
    • https://static.usrfiles.com/ugd/ab0441_d1d0e3e2248e4905babc73faae68a440.pdf
    • https://static.usrfiles.com/ugd/83e584_03dcc0fce24d40d7b03cc1192b608ccf.pdf
    • https://cdn.shopify.com/s/files/1/0463/2861/0976/files/homophone_homograph_homonym_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6530/files/58746022506.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/damamufilurufofakizusuvab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9341/files/tawisajaxosiwinegu.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_off0001068f.bin
f0a4af0ba9b53d06d424949b9052cd681a11295f39db658bfee5a8e00771490d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1068F 5020 bytes
font_01_sfnt_off00011787.bin
f8d7ae81e54a881675ff6be7823398aa35127ccd81d14bc6d2b8a98ee63800d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11787 16632 bytes

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