Malicious PDF — malware analysis report

Static analysis result for SHA-256 797c071a6e710265…

MALICIOUS

PDF

89.2 KB Created: 2021-04-15 11:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8701e94e8c5bb62bc137186a8bda543d SHA-1: e9846e25667734e0a4c218835283737650ab9e1b SHA-256: 797c071a6e710265b2a1b5de52a777a8b6812b671716e571e2ec44744f448d3c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to using a camera as a webcam, which is a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://midufefew.ru/strik?utm_term=how+to+use+sony+cybershot+camera+as+webcam PDF link annotation
    • https://cdn.sqhk.co/betewulo/0qryjcB/simedojeraretudesapa.pdfIn PDF document text
    • http://fipoziwebetaz.22web.org/kurzweil_pc88mx_for_sale.pdfIn PDF document text
    • http://storedubai.shop/14726056231vy3ji.pdfIn PDF document text
    • http://blubadgehelp.net/pekobaxessxy3.pdfIn PDF document text
    • http://xufunuduxatene.iblogger.org/65414558009.pdfIn PDF document text
    • http://magufeju.iblogger.org/tamil_amman_bakthi_songs_free.pdfIn PDF document text
    • http://azorocheat6.xyz/jelapubaribamewokejfwrjg.pdfIn PDF document text
    • http://opensoda.pro/kolagefokutevip166nv.pdfIn PDF document text
    • https://cdn.sqhk.co/forexidof/ajj65gi/1205890131.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/idgfL1z/14024215522.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/sIiegfg/jerudukamurazopipokixo.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/LY0Zggf/lolujewajabive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/78655079203.pdfIn PDF document text
    • http://vunivaluxok.rf.gd/10835175054.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/98279459121.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/methodist_hymnal_silent_night.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/how_to_write_a_lab_report_for_chemistry_example.pdfIn PDF document text
    • http://kubatejabudebuj.rf.gd/dakk_menetrend_kecskemt.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/17687093587.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/what_is_the_goal_of_juvenile_justice_system.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/dimunavifovujileweroji.pdfIn PDF document text
    • http://tabonozekes.epizy.com/vupuse.pdfIn PDF document text
    • http://nakodazik.rf.gd/how_to_gain_mental_toughness_in_running.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/68884315224.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11238 5136 bytes
SHA-256: 8f0c9c90116021f3742643661951a266ea4b4b22e2238d51fda2d533d26575ec
font_01_sfnt_off0001238a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238A 10952 bytes
SHA-256: 8087185c3fc04f4cc56c9a5aa488bb419c2853597276f38679822297273a6ab2
font_02_sfnt_off000148f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148F0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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