Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0175b0b549e241…

MALICIOUS

PDF

81.2 KB Created: 2021-06-07 23:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b39ec9718eb5950396357b926f71fc95 SHA-1: 774b19be903dbe79f031f4ef6cba3855f36996de SHA-256: 4d0175b0b549e2419386135f26c72c42e99ebeb723617f50f574966f450a6508
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a site offering 'asphalt 8 crack mod apk', suggesting a phishing or malware distribution lure. The PDF structure itself contains no executable scripts, but the presence of the malicious URL is the primary indicator of compromise.

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://jottigo.ru/123?utm_term=asphalt+8+crack+mod+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366324/normal_5fc5d3b94d601.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470837/normal_5fff9665c44d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387701/normal_5fee9ccf00410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446759/normal_6038629139b30.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://uploads.strikinglycdn.com/files/508e29dd-c02d-4222-8c7f-c8fd5ceec344/starplus_vodavi_triad_phone_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8af57e-f55b-4316-a8ee-b3fd0e8523cd/fanopijuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f811aca8-1dac-4a71-9f62-4dc3cf1ad4d3/man_in_the_high_castle_castle_cast.pdfIn PDF document text
    • http://tefimemovem.pbworks.com/w/file/fetch/144659793/is_neutrogena_french_milled_bath_soap_antibacterial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a08510-a06b-47ea-9997-5112efc72331/pmbok_project_management_methodology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/711af6d0-c5cb-418e-a32e-790565c590a9/sherlock_holmes_full_movie_in_hindi_download_480p_khatrimaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/330dec84-0d90-4b53-943a-dae6bccd4e8b/detuxazejiporibawuguru.pdfIn PDF document text
    • http://ziriwuru.pbworks.com/f/why_is_my_ice_maker_light_blinking_kitchenaid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f70920-faa5-488d-83d2-6682ef197110/microsoft_excel_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832644b8-3e76-4873-96a1-113caf6174c9/81865198718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d2f37d-f06f-4241-afe2-7165cc643c44/kulukeweretikaxukogaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/392c1568-6eac-4e8d-9888-5a45e91a4895/mirisaduwinedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cafae254-c087-4f88-9c35-b07cccb3e84d/sezofub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8eb8516-cba0-4f8c-89ba-4ca74910974e/10687796923.pdfIn PDF document text
    • http://moxulolo.pbworks.com/f/aynabaji_movie_download_1080p.pdfIn PDF document text
    • http://vikowezanipe.pbworks.com/w/file/fetch/144586980/derarubawak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f6e26e-85a1-40f5-8050-51bc08f862f5/walerukozivojolubukoda.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_off0000f214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF214 5076 bytes
SHA-256: 98736f454a231e6145a47c2acf4260496289657178450cd4907ca6b95f04cead
font_01_sfnt_off00010341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10341 11208 bytes
SHA-256: 7e3a2aa48c86fec14e81462db2269d5741944972d5f0486c49df9b00736064a2
font_02_sfnt_off00012965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12965 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e