Malicious PDF — malware analysis report

Static analysis result for SHA-256 114c6e7d5777722e…

MALICIOUS

PDF

53.6 KB Created: 2020-07-20 17:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6ec8f34cf4a927dabc990dc4a50fc1a SHA-1: cf683bb6e29aeeded0859d94e618f13e2d14ab41 SHA-256: 114c6e7d5777722e3c36dc742e426816cb57146b703677ab5bde53d37966e1ae
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains text related to 'color management pdf printing', likely a lure. The presence of numerous external links, many pointing to Shopify, suggests a link farm or content distribution network used to host malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=color+management+pdf+printing
    • http://files.mingsbubbletea.com/uploads/1/3/0/7/130738919/4899208.pdf
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdf
    • http://files.firstclasscanvas.net/uploads/1/3/2/3/132302858/meritifi.pdf
    • http://files.rumjourney.com/uploads/1/3/1/3/131398084/a0a83.pdf
    • http://files.stephanieflear.com/uploads/1/3/0/9/130969598/muxusefomux_lojesoka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0533/6985/files/5413345685.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/gabigukoxigoga.pdf
    • https://cdn.shopify.com/s/files/1/0434/8290/6789/files/65941402441.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/jativowubujivokanet.pdf
    • https://gozetazemo.files.wordpress.com/2020/07/gegiwafofewaragug.pdf
    • https://xevadev.files.wordpress.com/2020/06/34759248521.pdf
    • https://luropuk.files.wordpress.com/2020/07/terurowuwodonare.pdf
    • https://gukewatosum.files.wordpress.com/2020/07/61987992909.pdf
    • https://zosemonu.files.wordpress.com/2020/06/41101445351.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/80180247099.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/wozetifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/mavogoxubapovonolu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/59501507478.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/telamiwuxuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/nimesu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009432.bin
afcba449a319064c2df08897d436395ce603cee158a1a78c92b4c7813ae0667f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9432 4996 bytes
font_01_sfnt_off0000a514.bin
694b791d66c5dafc41276099c9a45fbe4f458393622f8c23fea1f1ec5b061fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA514 10412 bytes

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