Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8baa5416aec2ae…

MALICIOUS

PDF

64.7 KB Created: 2020-12-17 23:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c384bcfaa441c79de4cd274125abedd7 SHA-1: 15b3d6fce0a912d650b9df0e7a2a797c5723f3a5 SHA-256: ad8baa5416aec2ae9c72919d0edef886f571f68415b4d1403c23477adf7980d3
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafficel.ru/strik?utm_term=tarot+zyx-m+setup', which is likely the malicious payload delivery URL. The document body, though heavily obfuscated, suggests a lure related to a 'Tarot zyx-m setup'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=tarot+zyx-m+setup
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f9a0c102fdf0.pdf
    • https://static.s123-cdn-static.com/uploads/4446781/normal_5fccb2385b22e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0ea6ac6229360ecad0c46/t/5fc7bfd67995075abdf060d0/1606926294757/ritopuguvemomexutexum.pdf
    • https://s3.amazonaws.com/degagaziv/c3_and_c4_plants_difference.pdf
    • https://uploads.strikinglycdn.com/files/11c879b6-0f55-4b8a-8c33-20f2b13de524/xujis.pdf
    • https://static1.squarespace.com/static/5fc39e3c5e8e827d429ee1bf/t/5fc65c269d7936484066533e/1606835239377/nujiwabilofadovadikare.pdf
    • https://uploads.strikinglycdn.com/files/d0c40d5e-9339-4eaf-8038-57ce44b09132/factored_to_standard_form_converter.pdf
    • https://uploads.strikinglycdn.com/files/bab661b7-dc13-40ad-8ac1-98392e6068b3/vupokijazezenogerij.pdf
    • https://static1.squarespace.com/static/5fce4c62f1fc5b0afdaa1fb0/t/5fd68dc35488895576b25f69/1607896515744/3112207701.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c964f98375720d699ac/1606372505890/solar_seal_900_where_to_buy.pdf
    • https://uploads.strikinglycdn.com/files/28454e3f-524f-46be-83b3-1396440a5533/36447044940.pdf
    • https://s3.amazonaws.com/gaxuremewuger/corelogic_saferent_consumer_report.pdf
    • https://uploads.strikinglycdn.com/files/a77396bc-65a8-406f-bdd1-75ecf37c072e/80582378254.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe25ca18e72e5fdba063cd/1606297035494/consew_sewing_machine_parts_manual.pdf
    • https://static1.squarespace.com/static/5fc28fbed26ff1194f7e5808/t/5fcbcdef551bdc47e7b1932f/1607192048510/89592898569.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b50c.bin
c44c0b3ac079cb5de660fdfcbfd6ac366693b813f57601bf6b04987bf338c176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB50C 3208 bytes
font_01_sfnt_off0000c084.bin
a48b579084625ca1df98a4e2eb10f1522fbf81e8837264e7301106ff7dd869e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC084 5132 bytes
font_02_sfnt_off0000d202.bin
12be0382d6e9743b847b542d8025e4b64fddd2492701dc9c6764467bfae9f0e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD202 10356 bytes

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