Malicious PDF — malware analysis report

Static analysis result for SHA-256 35bbb05c3aaf63ec…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 23:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc50d3e9e37d84e9784200390e450faf SHA-1: 30d5b2388455749e35c13a71aa0d9312433ba58b SHA-256: 35bbb05c3aaf63ecdd057bde4949c1a1b90e277b8114c4f3e93a0c660f88215a
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=liste+des+chaines+canalsat+panorama+pdf'. The document body, though heavily obfuscated, contains text related to 'Liste des chaines canalsat panorama pdf' and 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of many Shopify URLs, while some are benign, indicates a pattern of using legitimate platforms to host or redirect to malicious content. The ML classifier 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.ru/pify?keyword=liste+des+chaines+canalsat+panorama+pdf
    • http://files.bugsweedsmore.com/uploads/1/3/1/8/131857544/suzasikiwuf_fodije_suwas_bisofebakum.pdf
    • http://files.tremaynesolar.com/uploads/1/3/1/6/131606965/zerapev-kobulotabov-tufeduvuj-gufajimejaji.pdf
    • http://files.nmocharitygolf.org/uploads/1/3/1/6/131607363/zasavirafefov.pdf
    • http://files.precisioniceandsnow.com/uploads/1/3/2/7/132741110/802277.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/76587640922.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/93930550584.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/9485271896.pdf
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/zulowipetafatemam.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/97023021569.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/36280636693.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/zibekijuzuzinegefun.pdf
    • https://cdn.shopify.com/s/files/1/0430/1324/3033/files/vor_rukoth.pdf
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/newoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0560/8099/files/avi_to_webm.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/check_disk_mac.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_off0000657e.bin
8ebcd30654b521a65395a10336250d28a4c6bcfed9e3be1b2206507bcbf5810b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 5336 bytes
font_01_sfnt_off0000777a.bin
97a4180ed135c18f34577afdf66af6fcfb9d57867eabd87dabc9ac621d658e62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777A 11972 bytes

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