Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda784a7447642b2…

MALICIOUS

PDF

43.5 KB Created: 2020-08-18 23:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddc99861fc2923103d3ca5d33b3f6ac7 SHA-1: 16a03fe6b77a76ba14695090253804ca58acfd11 SHA-256: dda784a7447642b2504ee15c719c89149599a54b70f82805457015e2e4a2056f
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=action+plan+template+google+sheets', suggesting a lure to a malicious site disguised as a template. The presence of many Shopify-hosted PDF links further indicates a link farm designed to distribute malicious content.

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=action+plan+template+google+sheets
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.prairiefootprints.com/uploads/1/3/0/8/130814421/busewijegibejeze.pdf
    • http://purune.fontanafoundry.com/uploads/1/3/1/6/131606407/lejexufud.pdf
    • http://files.thedolphinboat.com/uploads/1/3/1/4/131406563/fuvenixed-zobinid.pdf
    • http://files.bubbleytrinkets.com/uploads/1/3/0/7/130774994/dibakiwopoxunom-gebexiziber-rufazuvale.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/tubedakovafexofofakajijit.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/tulekeris.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/bluebeam_revu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/rowogukerigudezaxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musuvagexas.pdf
    • https://cdn.shopify.com/s/files/1/0434/8195/6518/files/numedupi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/dirowobiweluxin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/bulgakov_the_master_and_margarita.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/appvn_2019_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/kumezafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/86841271288.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_off00006ca3.bin
1802a54fadcf3e51ea96233fd98fdabc9186d03cf43aaf8c3b00009ed222b2ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA3 5240 bytes
font_01_sfnt_off00007e4a.bin
96053dc7e7a126f232abb229b4be856727b3811bc82bd3c384f1f3c7c6664ca0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4A 10204 bytes

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