Malicious PDF — malware analysis report

Static analysis result for SHA-256 1384c6a269cf32ab…

MALICIOUS

PDF

80.7 KB Created: 2021-06-10 20:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596f6e18bfff5538384fb554de311b03 SHA-1: e2d94555faa6fd771d097260dc1ac5e3468e80ee SHA-256: 1384c6a269cf32abd561dc2d60bf1d30c348d0da731cee4a0bfa710e5575eb16
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document flagged by ClamAV and an ML classifier as malicious. Heuristics indicate it uses an advance-fee scam lure, typical of phishing or fraud. The embedded URL points to a suspicious domain, likely part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://infrive.ru/pbw?utm_term=amr+diab+website
    • https://cdn-cms.f-static.net/uploads/4417537/normal_60460f6c7eb48.pdf
    • https://cdn-cms.f-static.net/uploads/4414500/normal_6066a39456b1f.pdf
    • https://cdn-cms.f-static.net/uploads/4484356/normal_6042ca074d75e.pdf
    • https://cdn-cms.f-static.net/uploads/4485162/normal_606dfd8ab8ff9.pdf
    • https://cdn-cms.f-static.net/uploads/4384655/normal_6035be87b9115.pdf
    • https://cdn-cms.f-static.net/uploads/4388841/normal_6020931c4bb91.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/5dd6fdf0-907c-4512-99f7-521f6305b655/zobuwiserawunolegowo.pdf
    • http://dejulagimu.pbworks.com/w/file/fetch/144565830/bonuno.pdf
    • http://tusoxefum.pbworks.com/f/dedodugafim.pdf
    • http://pajawazo.pbworks.com/w/file/fetch/145019493/35195583013.pdf
    • http://xawaren.pbworks.com/w/file/fetch/144661023/73461499003.pdf
    • http://zepupifob.pbworks.com/f/street_dance_of_china_2020_ep_1_eng_sub.pdf
    • https://uploads.strikinglycdn.com/files/1b8fd273-41da-48c1-b5f0-5a08492d7d52/puwowitanisamin.pdf
    • http://sagidetubi.pbworks.com/f/vidakuditezesupawe.pdf
    • http://wafijovodek.pbworks.com/w/file/fetch/144868725/kasojutuz.pdf
    • https://uploads.strikinglycdn.com/files/66ae93ba-da87-494c-9bb7-66ce825bbda6/vemabaxaxewigefo.pdf
    • http://funuvutidip.pbworks.com/f/18706893487.pdf
    • https://uploads.strikinglycdn.com/files/963979a6-0fd9-4d48-a590-e727e57b09f5/gimejukuk.pdf
    • http://sagidetubi.pbworks.com/w/file/fetch/144623718/fokebijolajolimi.pdf
    • http://sovamexor.pbworks.com/w/file/fetch/144767403/rapewarejumafomawatufiri.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d40f.bin
460b500e8330222471f187aac9760b17997b0c38f34b9cf21dbbe62a00c2c159		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD40F 4732 bytes
font_01_sfnt_off0000e423.bin
02cb0d9b6b136e160c33bd1043b093ca31e5f9901b0ebe339a575dc882eb02aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE423 12236 bytes
font_02_sfnt_off00010c31.bin
75824328a83a56419826411069f63a97371b1c152f6259eb7ef06bad86ab53d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C31 17284 bytes
font_03_sfnt_off000125b5.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125B5 4324 bytes

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