Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19563d03fe8ec45…

MALICIOUS

PDF

95.0 KB Created: 2021-04-03 00:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f9b8618fd142ce8f8e14966da32da70 SHA-1: cf9aaf5ed23349f5bed6db8825e616614d493304 SHA-256: c19563d03fe8ec4501c9f23917ac4c977b61a77786f101879599b1cf5b0aae2d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. The document body, though heavily obfuscated, suggests a lure related to data collection methods, likely intended to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=what+are+the+three+data+collection+methods
    • http://xupokaxe.medianewsonline.com/chicago_style_capitalize_job_titles.pdf
    • https://cdn-cms.f-static.net/uploads/4455208/normal_604673bd10428.pdf
    • https://static.s123-cdn-static.com/uploads/4373240/normal_5ff24f1266eb9.pdf
    • https://cdn.sqhk.co/deloreba/Sgiqhdb/70455530600.pdf
    • https://cdn-cms.f-static.net/uploads/4388426/normal_6011ec2e430a3.pdf
    • https://static.s123-cdn-static.com/uploads/4426960/normal_5fe5ec42334a9.pdf
    • https://cdn.sqhk.co/kinibemazoz/jd3igTf/62795951091.pdf
    • https://cdn.sqhk.co/jiwonukunav/1jjaPpV/95853155074.pdf
    • http://puzexijabin.mypressonline.com/zikujom.pdf
    • http://lukiduxipapep.mywebcommunity.org/56997008124.pdf
    • http://jofifuneku.medianewsonline.com/area_of_polygons_class_8_worksheets.pdf
    • https://cdn-cms.f-static.net/uploads/4387825/normal_5fe8058744199.pdf
    • https://cdn.sqhk.co/vunebapenuj/Fhhijji/hungry_shark_free.pdf
    • https://cdn-cms.f-static.net/uploads/4367903/normal_601b004fb59fb.pdf
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fd9420e14273.pdf
    • http://tepoparupomo.medianewsonline.com/fafarenawitulo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vofolosozoz.epizy.com/south_actress_4k_wallpaper.pdf
    • http://xiwozoget.atwebpages.com/rexube.pdf
    • http://viganoxoloni.rf.gd/51172453455.pdf
    • http://legabukev.epizy.com/blood_relation_questions_ibps.pdf
    • http://pipizupife.epizy.com/the_nutcracker_story_characters.pdf
    • http://bejanifezilo.atwebpages.com/70683451918.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001218c.bin
6508afe01b69984924fb228cd246c8bcde5fb2c908ea40c4763d8c79866efe1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1218C 5192 bytes
font_01_sfnt_off00013312.bin
f62509f2f58d8fc872b4542209c85ea840e6d18c0a1d32d8f426515db4a0bceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13312 11128 bytes
font_02_sfnt_off0001590d.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1590D 16204 bytes

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