Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ad5b0aa4ac7fed…

MALICIOUS

PDF

86.1 KB Created: 2021-05-31 23:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 3eb03e1e9ec843df807e3ed53218662a SHA-1: cc33d7403738a3f1f6e1dd5bb31c6ce435af454c SHA-256: b2ad5b0aa4ac7fedce806692bff403aad6260d1708a02165b2c886fadcc62399
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a mass external link farm pointing to disposable hosting domains, suggesting a phishing or scam attempt. The presence of a 'download button' heuristic further supports a deceptive user interaction pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://allytemp.ru/pbw?utm_term=how+to+cheat+on+edpuzzle+2021 PDF link annotation
    • https://dagatofolake.weebly.com/uploads/1/3/0/8/130874029/bagilikaxef_vurer_taseso.pdfIn PDF document text
    • https://nofixemi.weebly.com/uploads/1/3/6/0/136082439/winitumotetanozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_603603f4777ad.pdfIn PDF document text
    • https://bemikazuriku.weebly.com/uploads/1/3/4/6/134648669/923ff10d27403.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4368748/normal_60b21d5cca000.pdfIn PDF document text
    • https://fezojeme.weebly.com/uploads/1/3/4/6/134614855/4588099.pdfIn PDF document text
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/9004385.pdfIn PDF document text
    • https://dikasawo.weebly.com/uploads/1/3/5/3/135349802/199627.pdfIn PDF document text
    • https://giwojagamepebew.weebly.com/uploads/1/3/4/8/134881383/jekenareted_gikosukibez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_602ed5551f179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385421/normal_601ebfa81ca6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420910/normal_5ffd14eaf4010.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/bumusotel.pdfIn PDF document text
    • https://retumitoratosu.weebly.com/uploads/1/3/4/2/134234586/delimorukig_fupejapebugete.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477651/normal_60595862e74e8.pdfIn PDF document text
    • https://pefobasor.weebly.com/uploads/1/3/4/1/134131397/166919.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/b03be06e-ec6e-4393-8ae8-82553efc2386/pavonapanewodoxexezijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4396ab5-e538-41ce-8d9d-4449a55196ae/flowers_in_the_attic_lifetime_movie_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f400520e-00d4-4b47-be4a-3298752d8bbc/litisagibikorep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb35203-3939-42ba-b8f4-de25137a2597/damasifuvibimal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203cfb23-47d1-4b6c-9b68-c09efd332f6d/royal_caribbean_drink_prices_2019_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c86f8c78-5c23-4c2c-af52-00a072384f0f/sifipumitexaretufavid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8e8f359-94b6-4db7-94b1-e7ba5c1189ed/como_hacer_la_escenografia_de_una_obra_de_teatro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c472377f-77d2-40a7-8a15-28893f0eb836/29683325830.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_off00011203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11203 5316 bytes
SHA-256: a2674c6e2b4281170c435478c3a3cbdfc389a478cb2607063aca0449a6ee6bba
font_01_sfnt_off0001243a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1243A 11488 bytes
SHA-256: 54ea4d89d02c50a6618aba2d74e92259ce100320357dc918fd95bc0bd2690939