Malicious PDF — malware analysis report

Static analysis result for SHA-256 11274da3b322e7ae…

MALICIOUS

PDF

78.5 KB Created: 2021-05-03 02:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c7a5f14b98d81e3cb93b87044aa3d673 SHA-1: e39d22760939e2c973640b20fd5e5a3943b61321 SHA-256: 11274da3b322e7ae19781f54b04db2d610b21bfde8e64dca11ebc9cdf0f6d423
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://resalured.ru/strik?utm_term=health+and+safety+executive+education', which is likely a phishing or malware distribution site. The document body, though partially corrupted, suggests a lure related to 'Health and safety executive education'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/strik?utm_term=health+and+safety+executive+education PDF link annotation
    • https://cdn.sqhk.co/jepivitixiwo/chjKvce/equalizer_material_fx_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477387/normal_602059ca6d8c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_605587a9ec4af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_6051c1a342910.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/bhdictF/39532355525.pdfIn PDF document text
    • https://cdn.sqhk.co/xeliwiwogivo/iajg9gg/towowageburasopewube.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/haGMeld/7464295943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418755/normal_606e7ba8dd371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_606c99b98a1b4.pdfIn PDF document text
    • https://cdn.sqhk.co/wojusipi/oUBdR92/c_format_byte_as_hex.pdfIn PDF document text
    • https://cdn.sqhk.co/budotedo/mVfiiie/fury_survivor_pixel_z_mod_apk_blackmod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_602f3cd0d54d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_6019c31e9eef5.pdfIn PDF document text
    • https://cdn.sqhk.co/leguzufaju/VuQjcgc/93277562150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451574/normal_6061a3921963e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_6020a96c22e29.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/jdXjfhb/10358099442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_60591fd479e02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471703/normal_606e303b1ec88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_5fe7c9d037191.pdfIn PDF document text
    • https://cdn.sqhk.co/rosisole/nghODhe/99093838222.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/jgUihoC/basic_ballet_positions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455387/normal_603be5b50e4ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/44480637722.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/kanukat.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_off0000f4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F0 5204 bytes
SHA-256: 49e648c46314933e3760253eb51b76d847290d91ac27b8d1fc162c4f216aeea2
font_01_sfnt_off000106b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B5 11128 bytes
SHA-256: a86b046b718442e15903285ef0f3973baaa17322bf405ddda16d271340247fac

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