Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ae63b9c65376e4…

MALICIOUS

PDF

177.3 KB Created: 2021-03-27 12:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e58b948f27afbb7fab0af0e82244202 SHA-1: dca38a4f31dbdb69766de15672c5555c6f702770 SHA-256: c4ae63b9c65376e4d372b38dab495a4152856d5f499788a57e3d5d66d637ca3a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL points to a domain that is likely involved in phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://maypoin.ru/wix?keyword=farley+elementary+school+hours
    • https://cdn.sqhk.co/xusopusavo/R1icMsv/download_cash_for_apps_free_gift_cards.pdf
    • https://gipulafu.weebly.com/uploads/1/3/4/4/134442702/fodobabotagawevuj.pdf
    • https://cdn.sqhk.co/gorokipo/hfj7xRx/how_to_draw_baby_yoda_face_easy.pdf
    • http://ebay-coupon.ru/wolodunipuxesuvinlq7bn.pdf
    • https://kefomituwo.weebly.com/uploads/1/3/2/8/132815939/a20a3.pdf
    • http://life50it.pro/dotawurirogebegopuzajjqskq.pdf
    • https://rumitubo.weebly.com/uploads/1/3/4/5/134525427/3991350.pdf
    • http://helpcenterbusiness.xyz/how_to_use_whirlpool_water_softening_cleanser_formulal1471.pdf
    • https://zatozidebowetam.weebly.com/uploads/1/3/1/3/131398213/7903448.pdf
    • https://bepugodaz.weebly.com/uploads/1/3/4/2/134236138/155798.pdf
    • http://fakaripeti.xyz/46774580588e1kee.pdf
    • https://zepagowixo.weebly.com/uploads/1/3/4/8/134887299/7db67620cf.pdf
    • https://ripodomix.weebly.com/uploads/1/3/0/7/130775876/4490036.pdf
    • https://tafulagi.weebly.com/uploads/1/3/4/6/134608062/4449fd3.pdf
    • https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/b1eed5ee6798.pdf
    • https://deparabijafepoj.weebly.com/uploads/1/3/4/0/134040416/teduretilokoxon.pdf
    • https://cdn.sqhk.co/xuxinugad/jbiagcd/ap_stylebook.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_d151d93d5e6a4ee08f5063f5279a3862.pdf?index=true
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_1062a5a4330949dea0ede662cac781ee.pdf?index=true
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_90e04e15b03749feaa0d399a9bff1cee.pdf?index=true
    • https://47e244ab-6b1f-4ae7-97e8-86de5b619f9f.filesusr.com/ugd/e1d12c_e3ea577a079e413db131d6423461b1ab.pdf?index=true
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_709a12a896c748bc86221de05bfed536.pdf?index=true
    • https://a19d597f-2220-41b3-9459-688249e8a20b.filesusr.com/ugd/f19f53_b4fa75820235419ab8d925a6aaee7e84.pdf?index=true
    • https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_66d1efd85f2c4f3b9873f560ba2b4bb9.pdf?index=true
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_bcf686d983d24d6ca68f240846e06ba0.pdf?index=true
    • https://ff536187-e25a-4bd2-965b-ff1113cf40b0.filesusr.com/ugd/bfcccc_b6954d746bed490e9f13b3f57f881fef.pdf?index=true
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_a61cf2e9f24e4ed68e18a5bb5bee96a9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002809c.bin
9a8f23f81aeaf2bf8fd2eb2cbfeeab9229fb2277ad36473a6801dce821fd6c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2809C 5096 bytes
font_01_sfnt_off000291ca.bin
f5750794b903a40ff2eceaf54f43aa0319148462ec82163a9aa7a09cec1fd6e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x291CA 11116 bytes

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