Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f786d03dce06bde…

MALICIOUS

PDF

58.3 KB Created: 2020-08-18 19:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9168cb942ed67b26936dd5048fafc5ec SHA-1: af933b6d341a70f2930cb60292f6faf2e5dc5bb5 SHA-256: 6f786d03dce06bde9229e513b45eb252208547a3c21341b5f4ed58a63d8dc3f7
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=terminator+4+english+subtitles+free'. Additionally, it exhibits a 'Browser extension / update installation lure' and a 'Visual download / call-to-action button lure', indicating a social engineering attempt to trick the user into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=terminator+4+english+subtitles+free
    • http://files.jamiewrites.co.uk/uploads/1/3/1/4/131408024/sotovifudi.pdf
    • http://files.menwhopaint.com/uploads/1/3/0/7/130775458/d460eb0471.pdf
    • http://files.pianistic-elegance.com/uploads/1/3/1/4/131483305/43624.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/41230522234.pdf
    • https://cdn.shopify.com/s/files/1/0438/8818/1400/files/10741132366.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/scratch_coding_games.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/educacin_y_neoliberalismo_en_mxico_jaime_ornelas_delgado.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/figofej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/bonokedaxag.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/sap_basis_certification_material.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/calvary_temple_songs.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/small_group_guided_tours_japan.pdf
    • https://cdn.shopify.com/s/files/1/0444/3560/3623/files/kirksville_mo_restaurant_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/tawobapuvo.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
    • http://sinhala.sourceforge.net/
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
    • http://www.gnu.org/licenses/gpl-2.0.html

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006923.bin
58a295e89c26daf33c876d684bbdbdb35f671f4477650beb56e1f517f1cc95f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6923 3908 bytes
font_01_sfnt_off00007717.bin
3ce40a67748f39f1f8c036501e60db09abd1f96edcbdfc51fdd075e381a4e107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7717 5360 bytes
font_02_sfnt_off000088e9.bin
1425222a015379403836e3d1322d9586140e2c44613d93ea51265b79c7e3a6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E9 15056 bytes
font_03_sfnt_off0000ae0f.bin
2b760e4d9c379db4d46ddb6987aece3fd67233d25a0333d28c7f0438d5e1202a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0F 1896 bytes
font_04_sfnt_off0000b726.bin
c79fb6a88a27527dec98b80d424b972dd33e04ddf0c8db0a49802928a8aacc48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB726 10364 bytes

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