Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f02385e547f967…

MALICIOUS

PDF

46.8 KB Created: 2020-08-14 00:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d22e60291e388bf6cc4d4d8a91b5d50 SHA-1: d969eb6a2200dea5ed797b64b203c4a8fb480083 SHA-256: 19f02385e547f96754f672e3da6903f961da15445410094da957b32fcd952e58
150 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 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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.ru/pify?keyword=inch+to+mm+conversion+sheet
    • http://files.perceptionofpretty.com/uploads/1/3/2/7/132710690/e19a1f0f56ffc.pdf
    • http://zupawox.sapsoriginals.com/uploads/1/3/2/8/132814742/2e503b46f0.pdf
    • http://files.omgyummy.com.au/uploads/1/3/0/7/130740174/lobitisudeneri-fakogasavakefij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/71385396829.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/62653107388.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/vesoriveretamuzixowuwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/68962038752.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/suramedo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/57764627469.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/28047229225.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/temumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/12630249925.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/vadizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/77033122490.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/42824836479.pdf
    • https://cdn.shopify.com/s/files/1/0432/2947/9072/files/swat_callouts_lspdfr.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_off00006ba1.bin
49be1c43aee9ab987ef61c1990f6f2ee4e2c5398881f24b5222a5e6a38ec04b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 4796 bytes
font_01_sfnt_off00007bbd.bin
3c06e0f17417c032b1d613d2cdfddc00583b47df3c9682763538797989cde56e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBD 15716 bytes

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