Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb3ec7fbcb25106…

MALICIOUS

PDF

76.6 KB Created: 2020-12-31 15:44:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fa61ccb5476d74589f3c0375a7141053 SHA-1: 26309b9ee15c0b729c20fa90ffcb4032a7f12b09 SHA-256: fbb3ec7fbcb25106eaf29039242857a94eb2df28b0a570d05d4f21f39faf6dd9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, directs the user to a site offering a modified application. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though partially corrupted, contains text referencing 'download geometry dash mod apk unlock all', reinforcing the lure.

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://traffnew.ru/123?utm_term=download+geometry+dash+mod+apk+unlock+all PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473947/normal_5fb4739fd601c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5fe3a4cb97b6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416665/normal_5fac2eca1833e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb67caaf-0351-4c21-8601-3f0591fb03dd/apple_watch_ringtone_for_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85222695-ad3d-4c41-925c-b74b64e08417/stihl_fs100rx_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f01c2f7-7ede-4a4f-8bdd-dc642fabb8c0/drop_seat_pajamas_history.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/ims_pharma_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48b23792-0dd6-4e0a-8bc1-1622fe443a8b/loge_outfield_box_seats_miller_park.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abbd0442-9616-458a-8042-24bc84443512/let_me_try_again.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/jibonekigafoxivolifuxobam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22a8b74-13ed-466f-af9e-b007366793ae/14537082364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce12086c-cff5-4b01-a69a-897cd734d469/random_question_generator_deep.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEC 5744 bytes
SHA-256: 2278f2cf456cc1e0a251bf8678695603ba5b3413f54c150257f7d72451419810
font_01_sfnt_off0001016b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016B 10516 bytes
SHA-256: 823d2e7e965319c93aae82e5cb092ef776c846646b551ae1b7bd581ec809a4c5