Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f092034e5e9b94…

MALICIOUS

PDF

81.0 KB Created: 2021-03-19 16:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3da27efee94e4f45f9d0b08cb771e505 SHA-1: de6daf30a17354d0a209cdf03073026cd90e64df SHA-256: 15f092034e5e9b9414c0d2fc9daefd24fe113f855eb3878f083aa7f7502f87d6
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, https://ponafet.ru/strik?utm_term=why+is+my+ac+not+cooling+enough, suggests a phishing or malware distribution lure disguised as a search result. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs point towards a phishing or credential harvesting attempt.

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://ponafet.ru/strik?utm_term=why+is+my+ac+not+cooling+enough
    • https://cdn.sqhk.co/disonixures/Rid9jiE/jasemaliwodenitobumerufo.pdf
    • https://cdn.sqhk.co/pigexebobe/cgfQVjb/crossroads_kitchen_yelp.pdf
    • http://meetly.space/honeywell_wifi_thermostat_rth6580wf_setup0qvrq.pdf
    • https://cdn.sqhk.co/rurufimibiwe/uSzggid/cartoon_cat_horror_game_called.pdf
    • https://kukanoli.weebly.com/uploads/1/3/4/6/134641169/8041290.pdf
    • https://static.s123-cdn-static.com/uploads/4473656/normal_6000a2d918de1.pdf
    • https://cdn-cms.f-static.net/uploads/4464327/normal_602d91d0f3b73.pdf
    • https://kebegaxarebewu.weebly.com/uploads/1/3/4/0/134096812/labadev-luxedesukuxiril.pdf
    • https://rovisudaguxu.weebly.com/uploads/1/3/1/4/131438800/7296647.pdf
    • https://cdn.sqhk.co/fabozesemi/ghzMGhf/papimufotuwokiji.pdf
    • http://legendbilisim.com/59075807991yvq54.pdf
    • https://cdn.sqhk.co/melipetoluf/ftBgfXJ/fapefef.pdf
    • https://cdn-cms.f-static.net/uploads/4377925/normal_5fd31cb878ce0.pdf
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/9884441.pdf
    • https://cdn-cms.f-static.net/uploads/4404741/normal_604fae030f528.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kovilowab/apidra_sliding_scale.pdf
    • https://s3.amazonaws.com/ninasivol/mata_ji_ki_aarti_free.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_off0000f21a.bin
9d7d3dcfff3f08eb45920ae285dff5507d8b706931dffe2dee566033c0a9913a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF21A 5112 bytes
font_01_sfnt_off00010369.bin
be8028d52925d0ee5472ff3a5d429a96129d8798239cddaa5047f80e212d5d72
pdf-font-stream PDF embedded font (sfnt) at offset 0x10369 11040 bytes
font_02_sfnt_off00012910.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12910 4324 bytes