Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db292549e1741f9…

MALICIOUS

PDF

50.6 KB Created: 2020-08-14 22:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 356f9307cbdd27854fea4fc392b65c80 SHA-1: db099c0b8737be1e21a514c25aaebe8648ce9f1c SHA-256: 6db292549e1741f905fcc70918a9d0de44b67b5e7cc55fb741b61ec372a68452
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious infrastructure at 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'Heatilator gas fireplace manual' and the wkhtmltopdf application, likely a lure to encourage clicks on the malicious links.

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/wb?keyword=heatilator%20gas%20fireplace%20manual
    • http://files.leitchhealthybeef.com/uploads/1/3/1/0/131069961/mawapowedemaz.pdf
    • http://ruxemu.ibbusinessandmanagement.com/uploads/1/3/2/7/132740449/zanenujakolak-tobuvebot-dodavujemin-kelewoduge.pdf
    • http://files.brphotography100.com/uploads/1/3/1/4/131437750/fevalokitawe-tutat-teruf-dedisoxaxizuv.pdf
    • http://nutufadaf.timelessvoicesohio.com/uploads/1/3/1/4/131408024/pipojazunizer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/sewenutuzuxuwitozid.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6584/files/37935255727.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/lamipafutalazuzuzuzuxix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/85251214930.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/mass_gain_workout_routine.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/wutabuguzukexuzot.pdf
    • https://cdn.shopify.com/s/files/1/0449/0359/6187/files/java_jre_101.pdf
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/35182593249.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/muzoged.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/gesenumixojij.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/12644784735.pdf
    • https://cdn.shopify.com/s/files/1/0435/2045/8906/files/tudezabevepavokeni.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/wazaxojugorav.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/zuluvobujogo.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_off00007e49.bin
418d025fd1653b957e7dfadedff72f77d25dcdce6a4800203344622207077b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 5296 bytes
font_01_sfnt_off00009036.bin
15c6b02472c5f01b1843d7eb7d76aafa111e3c2869e40b1a834e1aa80ee2c5d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9036 14500 bytes

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