Malicious PDF — malware analysis report

Static analysis result for SHA-256 5881aa54c2888957…

MALICIOUS

PDF

76.4 KB Created: 2021-03-08 14:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59073222983a75105b95474efd7abce3 SHA-1: 7c0f33a89c21532441d5d0bea3082713531b619f SHA-256: 5881aa54c28889574a799384b3ec68294626a50e36e410ca08ec8d842e9c41d0
96 Risk Score

Malware Insights

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

The 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 a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/wix?keyword=madagascar+toys+argos
    • http://jokaxamilobizal.22web.org/clarion_cz302_bluetooth_pair_list_full.pdf
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fd378a7a70db.pdf
    • https://vowebaxuzifov.weebly.com/uploads/1/3/0/7/130738870/raxapenakupowox_pavopesoxiwonav.pdf
    • http://rowejabajusape.22web.org/wonogawosewefapo.pdf
    • https://gafapelisepofas.weebly.com/uploads/1/3/4/7/134762307/vitavunuga_ravadif_zijur.pdf
    • https://static.s123-cdn-static.com/uploads/4474170/normal_5fd06433dd9f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fepavipa.epizy.com/android_developer_options_dark_mode.pdf
    • http://dimebuturerab.epizy.com/nixon_watch_band_replacement_leather.pdf
    • http://vejebuta.rf.gd/88460360891.pdf
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_a703039f34dd44d7bb4c698125c21c9a.pdf?index=true
    • http://gisobugiwe.rf.gd/what_does_the_song_yankee_doodle_dandy_mean.pdf
    • http://givemuzod.epizy.com/solubility_curve_practice_problems_worksheet_answers_key.pdf
    • https://s3.amazonaws.com/nagudo/tafil.pdf
    • https://s3.amazonaws.com/vavabi/skoda_octavia_2019_manual.pdf
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_cb0a7131467a43eda93996666ea5f55b.pdf?index=true
    • http://fepadegan.epizy.com/46682483100.pdf
    • https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_6ffc3f5275814a3ca097c755fdfa9406.pdf?index=true
    • http://bafimilatape.epizy.com/how_to_avoid_gossip_as_a_christian.pdf
    • http://rizoweriwofa.epizy.com/53298246319.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_off0000e42b.bin
0d65df281a839626136285fc39f57f765336f3b8cf96ed84048621b26ad2f230
pdf-font-stream PDF embedded font (sfnt) at offset 0xE42B 5180 bytes
font_01_sfnt_off0000f5f1.bin
5cb804fd7ed3587df3eca2a41583ba879ee7877cfa865b832fdd69c9edf35e9b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F1 15160 bytes