Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ace27f3775d290…

MALICIOUS

PDF

235.3 KB Created: 2021-03-28 11:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d404067b25dc135c70f8bc4b8d74de77 SHA-1: 140f1f34117e47695bd2ffe69a7b29544dce6ac4 SHA-256: a0ace27f3775d2902f7e34a08b753144afebda058d18efc9e4c2b2847d2b2a93
136 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. The document body, though partially corrupted, suggests a lure related to a guide or prize, directing users to a suspicious URL. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://lozipotod.ru/wix?keyword=greenberg%2527s+guide+to+lionel+trains+prewar+sets
    • http://tuvurebomiworo.scienceontheweb.net/demensia_alzheimer_adalah.pdf
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5fcd985de4795.pdf
    • http://zajilakofudo.scienceontheweb.net/43739130520.pdf
    • https://cdn-cms.f-static.net/uploads/4384480/normal_605a6304dc924.pdf
    • http://noluwokufemifoz.22web.org/geotechnical_laboratory_measurements_for_engineers.pdf
    • http://nibajafij.medianewsonline.com/agrger_deux.pdf
    • https://static.s123-cdn-static.com/uploads/4476783/normal_5ff94a16d4f8b.pdf
    • https://cdn-cms.f-static.net/uploads/4452588/normal_6050924520d5e.pdf
    • http://rujokevawevi.22web.org/selenium_python_chrome_directory.pdf
    • http://tixesikixux.mygamesonline.org/75323223963.pdf
    • https://cdn-cms.f-static.net/uploads/4451544/normal_605cdf89d4195.pdf
    • http://kevarusakoko.mypressonline.com/xivokalil.pdf
    • https://dexidexida.weebly.com/uploads/1/3/4/2/134235246/5306714.pdf
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/6389086.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_bb8b0ded2cc34c2c943878f62f759eec.pdf?index=true
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_8938427480144a4181744ce99473f6e7.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_d39f1bf9ec6c45d195e97051c486db48.pdf?index=true
    • http://tonavisuma.onlinewebshop.net/encphalopathie_infectieuse.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035e8a.bin
c3c90e50cb35878887104db85150ed21188e0edde80f649b21ca654097509fb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35E8A 5424 bytes
font_01_sfnt_off0003711e.bin
15d951c05b689f292dc0f130e6b78ef62585b00938c7019034ff17106a558071		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3711E 13028 bytes

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