Malicious PDF — malware analysis report

Static analysis result for SHA-256 39455db315752f50…

MALICIOUS

PDF

78.0 KB Created: 2021-04-03 04:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d50997a0d6dcf485ad6db0585df6d9e9 SHA-1: 059dc2418a2d044659fb81479eb3d3c079d031fa SHA-256: 39455db315752f50951bba384e9afb7484a96f09fe0143208a5400b4c1f047af
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely a phishing lure. The document body, though heavily obfuscated, contains text that appears to be part of a phishing attempt. No scripts were extracted, but the presence of external URIs and the phishing detection suggest an attempt to redirect the user to a malicious site.

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://nipisod.ru/strik?utm_term=yo+amo+los+zapatos+dresses PDF link annotation
    • http://all-casino.xyz/rc_driving_gamesduzxd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415936/normal_600c3c284419d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490936/normal_60089e4d344ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_60530e31cc5cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fe0f36e12696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414174/normal_5feb40813861b.pdfIn PDF document text
    • http://istlan.space/how_to_lose_weight_well_mexican_diet_plan7uw6w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3d3d1f-2c2d-4cef-bc5c-245cfef293bd/in_the_heart_of_the_sea.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/the_breadwinner_novel_study.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e923ab5-1fff-471a-8e14-d18e3ca72bbc/memowewosolakelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e885a46-820f-47de-abdc-a06d0d9d15b0/zaxajiteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ab4bda-e789-44de-aab9-aa288a0a936c/58691622981.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/leadville_marathon_race_report.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/20394369996.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/the_leftovers_cast_imdb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ce3868-2993-4a6a-a340-bfe7d20a7552/48797002608.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59E 5116 bytes
SHA-256: b1187c5e2d15d28256aaedce18cd6e0bdee6e594cf4457831783c203e2b33d66
font_01_sfnt_off000106f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F4 11072 bytes
SHA-256: 3e85fe649e3b10d1405b0e8d5c7c3b0eda533e6ee5722277b265d4e4ff12c919

Open this report in the interactive analyzer, or submit your own file for analysis.