Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ca977088a507ca…

MALICIOUS

PDF

58.8 KB Created: 2020-08-07 05:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8f53519ca0413b7b9ce7019840cc1de SHA-1: ec5f6ab9b8951c896717fc5a371fdaade86acccd SHA-256: 00ca977088a507ca135f40327112b3ab6b14f7683f8a2f292bb42a97a7f1f2f9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. A critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=liste+allergene+und+zusatzstoffe+pdf', indicating a phishing or malware distribution lure. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=liste+allergene+und+zusatzstoffe+pdf
    • http://files.tourism.myosceolachamber.org/uploads/1/3/1/3/131398515/bonimebob.pdf
    • http://files.lion-biomass.co.uk/uploads/1/3/1/4/131438234/856795.pdf
    • http://files.alanbirtwistle.com/uploads/1/3/1/3/131383664/werox_xapedewero_bemidituziv_zurer.pdf
    • http://files.richardsorabji.co.uk/uploads/1/3/1/6/131606502/7749857.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.fontrix.comhttp://www.nhncorp.com
    • https://cdn.shopify.com/s/files/1/0440/7666/2934/files/jigukitakevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/55954565628.pdf
    • https://cdn.shopify.com/s/files/1/0430/7858/2439/files/93362248477.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/17374721238.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/42852452667.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/sanijatotapezanemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/15368915471.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/tasukidafazig.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/admin_clerk_duties.pdf
    • https://cdn.shopify.com/s/files/1/0431/2947/1130/files/alhambra_guitars_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/mokuxeserujew.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/vepukebozajikaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090bc.bin
f288087fb7faf934590c0abec719bbad06bf21c53f99c4f40fef705f00e80d0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90BC 5200 bytes
font_01_sfnt_off0000a286.bin
40d3b9d06c8fa0f99cd19a4c790fe8df7bdcd0e15aca03c0873c51921e275f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA286 2304 bytes
font_02_sfnt_off0000ac6b.bin
cd198c5fd38cd92d5fb5a2531e2e13bc0f291a661eef9dfd265ad99b89afefc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC6B 11460 bytes
font_03_sfnt_off0000d1eb.bin
93d99043bd44f23fa2745d707446e07bdcf956c70936ffd183d2d5218e4d36b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EB 2220 bytes

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