Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1e090e31297b97…

MALICIOUS

PDF

75.1 KB Created: 2021-06-09 04:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa3a03faa8caedcf388022ee1ff5606 SHA-1: df75af6b3bb140b3e43586102de0536720ae2b1c SHA-256: af1e090e31297b9781d6d11e22f993be39e0cc1e2d42adaeabd0743657955e0c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that is presented as a movie download link, a common lure for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL and the overall detection strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://crysiq.ru/pbw?utm_term=malupu+telugu+full+movie+download+mp4
    • https://cdn-cms.f-static.net/uploads/4412908/normal_60312e20dabfe.pdf
    • https://cdn-cms.f-static.net/uploads/4418558/normal_606b2132b07a2.pdf
    • https://cdn-cms.f-static.net/uploads/4402520/normal_601100573ec32.pdf
    • https://cdn-cms.f-static.net/uploads/4415537/normal_600fb4e8bac77.pdf
    • https://cdn-cms.f-static.net/uploads/4374366/normal_600c7889350c5.pdf
    • https://cdn-cms.f-static.net/uploads/4475728/normal_604b202d631cc.pdf
    • https://cdn-cms.f-static.net/uploads/4392649/normal_6053df21574d3.pdf
    • https://cdn-cms.f-static.net/uploads/4459914/normal_602e53dc04fd2.pdf
    • https://cdn-cms.f-static.net/uploads/4413468/normal_605bae98c50f8.pdf
    • https://static.s123-cdn-static.com/uploads/4420930/normal_6003de443660d.pdf
    • https://static.s123-cdn-static.com/uploads/4477620/normal_6003fc6609e48.pdf
    • https://static.s123-cdn-static.com/uploads/4376870/normal_600058bad5639.pdf
    • https://cdn-cms.f-static.net/uploads/4475737/normal_5fdbde4d4e546.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b2fee9bc-09a5-47fe-aa25-92175f6410e5/how_does_ipcc_define_climate_change.pdf
    • https://uploads.strikinglycdn.com/files/622f26c9-7903-4bea-b361-e7a3c75183e9/standard_long_haired_dachshund_breeders_uk.pdf
    • http://zevatirupura.pbworks.com/w/file/fetch/144678243/how_to_check_pregnancy_at_home_with_kit_video.pdf
    • http://mibegenav.pbworks.com/f/satazeje.pdf
    • http://wojoxevom.pbworks.com/f/list_of_ocean_animals_in_spanish.pdf
    • https://uploads.strikinglycdn.com/files/e57890c2-3744-4e55-b316-5254cd5cc71f/dd_4e_arcane_power_2.pdf
    • https://uploads.strikinglycdn.com/files/1b53cb27-e84c-484a-a3b9-cff697cff3fd/crazy_stupid_love_movie_soundtrack.pdf
    • http://vifogajo.pbworks.com/f/what_is_accounts_payable_ledger.pdf
    • http://kevuxezedila.pbworks.com/w/file/fetch/144605454/97711647244.pdf
    • http://juvupumanut.pbworks.com/w/file/fetch/144522321/38361133217.pdf
    • http://lokiboz.pbworks.com/f/4060720562.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_off0000da9f.bin
de1ce78b1a039bcbf25431a2e75d175b8a48ac50c9ead94c085cfcf75c9d5dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9F 5212 bytes
font_01_sfnt_off0000ec6d.bin
6ed80a7efe878f4cbc488bb7adf1ab1ef6e6678c485483c6a804813be82cfd64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6D 10660 bytes
font_02_sfnt_off000110d4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110D4 4324 bytes

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