Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c309ac281ce7f79…

MALICIOUS

PDF

71.5 KB Created: 2021-03-17 22:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe1d34ee4f5478d492c529447b9cd6a SHA-1: 34117b62da38774450d4e6d99b6b14ef61a84e96 SHA-256: 5c309ac281ce7f796dd45fe9e736cdf7b4d4b7bc1b942e6d6aadbbf9f55ba484
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, suggests a search result context, further supporting a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=el+clasificado+long+beach+ca
    • https://cdn.sqhk.co/mopomotop/jfgcigK/vomujosev.pdf
    • https://cdn-cms.f-static.net/uploads/4453117/normal_60449f72904fe.pdf
    • https://cdn-cms.f-static.net/uploads/4487618/normal_6024162485b7d.pdf
    • https://static.s123-cdn-static.com/uploads/4418991/normal_6000a48e9e444.pdf
    • https://cdn-cms.f-static.net/uploads/4454562/normal_6046457ebcb08.pdf
    • https://cdn.sqhk.co/gasalikuviz/jxT5nft/abhishekam_movie_video_song.pdf
    • https://cdn-cms.f-static.net/uploads/4494677/normal_6015125a6c786.pdf
    • https://static.s123-cdn-static.com/uploads/4453129/normal_5ff8946655982.pdf
    • https://static.s123-cdn-static.com/uploads/4469359/normal_5feb42daae882.pdf
    • https://cdn-cms.f-static.net/uploads/4382412/normal_601b711c2b8e8.pdf
    • https://cdn.sqhk.co/gezubesekar/gf7L6jg/soweduluzadejupatareba.pdf
    • http://dixagodal.iblogger.org/rinixudiwafawinugajuke.pdf
    • https://cdn.sqhk.co/wimiwupo/Agdaib1/expressing_milk_guidelines.pdf
    • https://cdn.sqhk.co/dodamewope/aNifhbz/10200811726.pdf
    • https://cdn.sqhk.co/doporaba/kgiUiiG/3114006760.pdf
    • https://cdn.sqhk.co/vesagivara/jgBjcVj/snowfall_season_3_episode_5_recap.pdf
    • https://cdn.sqhk.co/pugudanirav/ejeJEGr/adorable_home_bento_box_not_working.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jamositewizet.epizy.com/english_speaking_course_book.pdf
    • http://pedorusare.epizy.com/xoxivasi.pdf
    • http://najaxobefirag.epizy.com/can_i_annotates_in_onenote.pdf
    • http://lubelulezafi.rf.gd/is_vanya_bad_in_umbrella_academy_season_2.pdf
    • http://kasilabupa.epizy.com/39687749481.pdf
    • http://fanurumuge.epizy.com/62366422662.pdf
    • http://virojokezof.rf.gd/15870256637.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_off0000d857.bin
3cc26726231e9c86b032c6d151d4024336eeaaaf33eff20bae3b1ef91cf1d635
pdf-font-stream PDF embedded font (sfnt) at offset 0xD857 5284 bytes
font_01_sfnt_off0000ea52.bin
2712b36b5ba9da713e760c78929ee5aad5d56c5b8609cb9a94ab2d4624066b63
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA52 11848 bytes