Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f1d3f2f84109fc…

MALICIOUS

PDF

88.9 KB Created: 2021-03-11 10:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03e59e9f087b090a519ffbd0d4f93c0c SHA-1: 5491918f1ba2941cd665fa6bc8456d6b74ee6e0f SHA-256: 88f1d3f2f84109fc9869b192ab1d57553e6cff25c2a42912e18ab482ed4d7868
136 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' combined with the document body's text suggests a phishing or advance-fee scam. The embedded URL points to a domain associated with this lure, likely leading to a further stage of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/award?keyword=single+streamlined+application+pdf
    • https://cdn-cms.f-static.net/uploads/4415046/normal_6021ce33e43a1.pdf
    • http://bandalet.club/doctors_note_template_microsoft_wordbjxgq.pdf
    • http://getsalle.xyz/what_does_special_parental_authority_imply_brainlyka85y.pdf
    • https://cdn.sqhk.co/vetukalujir/njcyWZd/sesepufisuwo.pdf
    • https://cdn.sqhk.co/joxusozomilo/iahfgen/91152909106.pdf
    • http://braco.ru/acrobat_reader_windows_10_64_bitngmvk.pdf
    • https://cdn.sqhk.co/nomazotesi/1Gih7rX/tufisab.pdf
    • http://jikusofare.mywebcommunity.org/yongnuo_yn-568ex_ii_nikon_review.pdf
    • https://cdn.sqhk.co/zebenane/ghJ25ic/hulk_smash_coloring_pages.pdf
    • http://help-bluebadgecenter.com/affiliate_marketing_strategy_templatebfcel.pdf
    • http://zememor.sportsontheweb.net/simple_subject_and_simple_predicate_exercises.pdf
    • https://static.s123-cdn-static.com/uploads/4371806/normal_5fdeca75eb562.pdf
    • http://eurostore.info/49696276166l2ob9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/dobikasukavu/google_chrome_40_filehippo.pdf
    • http://gubadif.myartsonline.com/89880546959.pdf
    • http://suduxegowur.onlinewebshop.net/49318632710.pdf
    • https://s3.amazonaws.com/wetevali/25971880871.pdf
    • http://ruruwuvatokatal.onlinewebshop.net/93098860165.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012bdb.bin
d088ce5157ad5a262db34243f3a4cb1309a69ca9bec87c19f8ec2fd8a45cb972		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12BDB 17948 bytes
font_00_sfnt_off0000e597.bin
1f2a410857892a372f4b820b879802e13d62a449e70072579bf38d0bf75e7773		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE597 4844 bytes
font_01_sfnt_off0000f69a.bin
60d7d3cbdeb174c3f8868e9f185da0303976246f878a04ec85d258c2f125427c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF69A 5368 bytes
font_02_sfnt_off000108b1.bin
86ff2fa7daed8d894abde1e69797e0f891061a7dded5f129dcb9777973bf26fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108B1 10364 bytes
font_04_sfnt_off00014791.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14791 4324 bytes

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