Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f71c242a074d04c…

MALICIOUS

PDF

79.9 KB Created: 2021-03-28 12:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86e51c9fb9b38567604344448f42d3d3 SHA-1: 9bb2d6c852ec0c24724c913c82dd8b5596742dec SHA-256: 9f71c242a074d04c1bc1215404a7d7d73a9eff09c99b31f5afa547cea4a6b997
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query for a product manual, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=black+and+decker+cordless+hand+vac+bdh2000l+manual
    • https://cdn.sqhk.co/zusisoko/ajfsgdd/king_of_avalon_kvk_tips.pdf
    • http://openchambre.xyz/najuzufexawaxajkspnp.pdf
    • http://vowavosudepomu.iblogger.org/how_long_does_it_take_to_get_a_private_pilot_license_in_canada.pdf
    • http://napufokotipo.getenjoyment.net/indian_love_stories_free_download.pdf
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdf
    • http://sekegixederixit.iblogger.org/4712343154.pdf
    • https://cdn.sqhk.co/roduxokixuzi/iSBhhgc/37526347787.pdf
    • http://itdiscount.pro/grohe_faucet_spray_head_replacement430wy.pdf
    • http://lnstagramcentre.net/27843929287khfhp.pdf
    • http://gemigowijudas.iblogger.org/20810687570.pdf
    • http://pixodizelevow.22web.org/xidevuzojikefagufogagon.pdf
    • https://cdn.sqhk.co/nelenikarate/jnkheid/wogigaropamowifokeran.pdf
    • https://cdn.sqhk.co/waxobakal/hiWQCja/pitch_guitar_tuner_apk.pdf
    • http://raicen.com/48656101769i7p00.pdf
    • http://easybranding.org/hp_elitebook_2560p_i7_review74bfx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tifuximixadove.rf.gd/calculations_in_analytical_chemistry.pdf
    • http://gapajafikotu.rf.gd/6613360673.pdf
    • http://bifovigavij.myartsonline.com/super_teacher_worksheets_geometry_answer_key.pdf
    • http://mekofeju.epizy.com/how_much_horsepower_does_the_2021_mustang_have.pdf
    • http://zatuvejamubolo.atwebpages.com/landscape_architecture_books_free_download.pdf
    • http://gasededal.epizy.com/70755416550.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_off0000ed0b.bin
ba5e2fdddb8d8d64fe44da73e9ef53357d93138e4f97b2d2fc2cbc24429e5103
pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 5520 bytes
font_01_sfnt_off0000ff91.bin
a21155b9ee0dd148ab75a8af1266595d2a285181fd0f3d1b41a9bf2d77bc2b20
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 10712 bytes
font_02_sfnt_off000123b5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x123B5 4324 bytes