Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc051ee1e13b7d3…

MALICIOUS

PDF

81.5 KB Created: 2021-03-20 07:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f1090f1255d18b4c8634be70790953f SHA-1: 45bde74c445a78af9c9a7b87337d080ae93d68dc SHA-256: 9dc051ee1e13b7d36e3839bfbbdab808f4e1a3219efc880dc895bcff0c5f116e
96 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, indicating a high likelihood of malicious intent. The presence of an external URI pointing to a suspicious domain, combined with the document body's obfuscated content, suggests a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/award?keyword=ativos+financeiros+pdf
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/1035482.pdf
    • https://jukejifoka.weebly.com/uploads/1/3/5/3/135311866/gilijategake.pdf
    • https://cdn.sqhk.co/mawejoxejobe/egdhdji/32930984792.pdf
    • https://cdn-cms.f-static.net/uploads/4499979/normal_604b9649285c5.pdf
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5ff5f8e4d8af0.pdf
    • https://vasirorikipik.weebly.com/uploads/1/3/0/7/130776585/37bda2c63d735.pdf
    • http://binixoloxagaj.iblogger.org/podefuzefuvetadaserone.pdf
    • https://serekarivevug.weebly.com/uploads/1/3/1/4/131407867/goxat.pdf
    • https://cdn.sqhk.co/savaketiju/TtgjhDD/favorite_color_in_spanish_translation.pdf
    • https://cdn-cms.f-static.net/uploads/4476272/normal_5fd70f5a144eb.pdf
    • http://bevarep.22web.org/how_to_integrate_xsinx2.pdf
    • https://wifivarar.weebly.com/uploads/1/3/4/8/134887990/1106224.pdf
    • https://static.s123-cdn-static.com/uploads/4458824/normal_5fe44a09b38dd.pdf
    • https://cdn-cms.f-static.net/uploads/4417025/normal_60513b76a253d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f8be998-3c28-412b-98ab-bdd22017528c/sole_f65_treadmill_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/e3183662-4520-4a91-998e-aab3737e1ecd/1723751590.pdf
    • https://s3.amazonaws.com/najubu/lomuximoralagudunoku.pdf
    • https://s3.amazonaws.com/baxegezivumi/gurajada_apparao_books_free.pdf
    • https://uploads.strikinglycdn.com/files/4e6a58dc-7cd3-45f9-a06b-dd54b7a50c47/how_do_i_change_my_adt_master_code.pdf
    • https://s3.amazonaws.com/piwupevivotixi/bairavaa_video_songs_in_tamil.pdf
    • http://wegojokudevepo.rf.gd/97709923816.pdf
    • http://genigasoferu.rf.gd/dutadutomajalurideno.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_off0000fd48.bin
0123ae27590758d428066e319f92d621c4771803bc476e29c415c45a41ff48f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD48 5168 bytes
font_01_sfnt_off00010ef8.bin
7b4c8e0d0242200bad29e61267f587f81a83ac671a110f783675992803ad92fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF8 13228 bytes