Malicious PDF — malware analysis report

Static analysis result for SHA-256 d117cae3301159cd…

MALICIOUS

PDF

86.4 KB Created: 2021-03-16 01:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d4a7e79df14a177e9ac13634f722734e SHA-1: cb480ed64a37a0b60245bd2775fd1ee6f6a7c1e7 SHA-256: d117cae3301159cd032dc994115cb0db567f6f92c9355a266adc44cf949001a7
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious content. Heuristics like PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM strongly suggest this malicious intent. ClamAV detection and ML classification further confirm the malicious nature of the file, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • 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://soxebez.ru/award?keyword=microbial+ecology+pdf+books PDF link annotation
    • https://pepigapipewoma.weebly.com/uploads/1/3/4/0/134000130/junasibejog.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/62290138454.pdfIn PDF document text
    • https://gudemulu.weebly.com/uploads/1/3/4/3/134387893/judikefifatolozol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461509/normal_6049e2a82753b.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/2016_toyota_corolla_engine_oil_type.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392877/normal_5fcda52c47642.pdfIn PDF document text
    • http://godubumoze.iblogger.org/99720740761.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/rozebivavafajel.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/c775648f346c2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5ff0d063b73c2.pdfIn PDF document text
    • https://vawudida.weebly.com/uploads/1/3/4/8/134890241/rozik-rozanija-dukowasuv-fivipede.pdfIn PDF document text
    • https://gikemozepuv.weebly.com/uploads/1/3/0/7/130740444/pedatijinojam-suxofumezofar-nawis-zoromuzuvenu.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/japopajekev.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://12f7643e-9106-4823-89c2-0bdaecd1bc22.filesusr.com/ugd/1f6d71_7600d018a71d49f38158b17a1e88bb7c.pdf?index=trueIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_06d9f290ffe14da2a1602feb4b24bd4c.pdf?index=trueIn PDF document text
    • http://nerofote.rf.gd/overtime_request_form_federal_government.pdfIn PDF document text
    • https://6d23287f-a15b-43b7-8d69-700c0e01f504.filesusr.com/ugd/185c00_78a482d9e7bb4c5bb282d139936154f6.pdf?index=trueIn PDF document text
    • http://vobozezojip.onlinewebshop.net/analyse_swot_coca_cola.pdfIn PDF document text
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_358b74a0d35545a796dd896e61948dcc.pdf?index=trueIn PDF document text
    • https://1794ee33-230d-455b-98b1-84d48067edce.filesusr.com/ugd/551769_f7cf1dfd73594dd5aefb9360e2bda3db.pdf?index=trueIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_5518381cd8eb44a5bc373f92cf315b43.pdf?index=trueIn PDF document text
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_903afeeec7c0480ba7ce9d2b9ec2d2b6.pdf?index=trueIn PDF document text
    • https://aed0ee3a-d217-4696-a563-de9ff15d6c37.filesusr.com/ugd/f80e3f_72f1931e6e684e339c4be3890c2d58ce.pdf?index=trueIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_cfa3f01e694d419e9907e60fafa5e71b.pdf?index=trueIn PDF document text
    • http://jebefufodapiwi.epizy.com/40980581837.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_off000104bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BF 5236 bytes
SHA-256: 2fdf7edcb2e4af2f08c839e4d2817bc08e3307afa65a1e07ded0ca2ec9b604aa
font_01_sfnt_off0001169e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169E 11920 bytes
SHA-256: b94f80c3b1f1f06e378f93156cef2d35a23d9727f7a1e04437fb53afad14bba1
font_02_sfnt_off00013d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D8F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.