Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cee08b1e3fc50ea…

MALICIOUS

PDF

82.0 KB Created: 2021-04-01 22:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: acbb1285dcec28aa7e47b5b72a94c47f SHA-1: af2fbf9e52fd3696330695894464569ea0a8a52b SHA-256: 7cee08b1e3fc50ea91529ed61cfcb85f50aa4fb099420b125c2e15dc13149f1e
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://xajibur.ru/wix?keyword=splinter+cell+apk+original+copy PDF link annotation
    • https://vefamomapebimid.weebly.com/uploads/1/3/1/4/131406391/sitijetidifebeda.pdfIn PDF document text
    • https://tigekinoninufuv.weebly.com/uploads/1/3/4/6/134687643/8744941.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/fawinaru.pdfIn PDF document text
    • https://jigaxokere.weebly.com/uploads/1/3/4/6/134622899/tasuzube_lilupokuzo_malijevupalil.pdfIn PDF document text
    • https://sovajavab.weebly.com/uploads/1/3/4/0/134041947/635336.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/saferedajipored-dapedugafigafik.pdfIn PDF document text
    • http://serarudipiwuvon.mypressonline.com/35084631265.pdfIn PDF document text
    • http://gegebafebofad.scienceontheweb.net/brazil_food_guide.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://84d655c4-d84a-4a0c-9c32-0387925bd622.filesusr.com/ugd/6233da_830b386abbe641ae81d431d9e01c3760.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pasawe/lalomedejawezozogonanomi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/aashiqui_movie_openload.pdfIn PDF document text
    • http://bavevex.onlinewebshop.net/cours_atomistique_liaison_chimique.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/indian_navy_mr_ka_admit_card.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/dukajeze.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/how_do_i_fix_my_dehumidifier.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/bekirunerodefarulopumiroj.pdfIn PDF document text
    • https://8e0cabef-d481-4215-b437-8a5fc4e4723c.filesusr.com/ugd/f41140_a26510a3cbd749378787b4c7904aeab7.pdf?index=trueIn PDF document text
    • http://forezepolutaju.onlinewebshop.net/74792285648.pdfIn PDF document text
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_29c78dc5c7a14713b14e8b197f9b7237.pdf?index=trueIn PDF document text
    • http://saluwagasa.onlinewebshop.net/back_and_hip_stretches.pdfIn PDF document text
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_1320011eb79c403da43bda2f2c5f2aa8.pdf?index=trueIn 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_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 4980 bytes
SHA-256: 49061e14f558c39b1c3eadf189bbc09e62a8376c7ff6f63c4a9f5c4146aeb154
font_01_sfnt_off0001060d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060D 11292 bytes
SHA-256: 050e04546e9a8505ae5c2137cecff27f8274555b4bfaadb71eaf49825eb2b193
font_02_sfnt_off00012c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C79 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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