Malicious PDF — malware analysis report

Static analysis result for SHA-256 44941d269d10a470…

MALICIOUS

PDF

49.7 KB Created: 2020-07-24 12:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51822c730f20f1cccb6565196964eec1 SHA-1: a3791cdf27446877e25fce7064b9914013f8463a SHA-256: 44941d269d10a470a45266e59e325991b9b66cc2bd92ee28d602fc2290bc2a97
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, appears to be a lure related to 'hempire breeding guide'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.com/pify?keyword=hempire+breeding+guide
    • http://files.mysterytomb.com/uploads/1/3/1/6/131637477/misifajetugoraba.pdf
    • http://files.kwsa.ca/uploads/1/3/2/8/132815054/petadu.pdf
    • http://files.helenslimestonesculptures.com/uploads/1/3/0/8/130813400/b0a92f20024e403.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kujefitil.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/vamibejowoputudozoxevewos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/73627669371.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/nawatewunazegolimumonuvam.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7519/files/74692605467.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/relejeneres.pdf
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/24355717344.pdf
    • https://cdn.shopify.com/s/files/1/0437/4147/9066/files/64857413854.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/61041354010.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/tamazafefurepisedeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/purizowilodupivemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/7115184423.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/
    • https://cdn.shopify.com/s/files/1/0429/5540/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a3.bin
98f6c96cddb36b26030f3c9a9a232c1b45188975175da4890969519b02f1414e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A3 4652 bytes
font_01_sfnt_off00008034.bin
feffc0aad6b382c8e586aa036cd1a3f295a64e1c209f38081415a0a8368805c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 10400 bytes
font_02_sfnt_off0000a404.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA404 16312 bytes

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