Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2928a37a1d55b35…

MALICIOUS

PDF

82.7 KB Created: 2021-03-27 23:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4578d334743e3142d589584281a80f75 SHA-1: 27102f65b80589d060a6fbba73275d5cc7dd03dc SHA-256: a2928a37a1d55b3555ebd985c7d3e26ba8d9ac4ddca18492f697219a0fc36700
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a phishing page disguised as a drug interaction search result. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/wix?keyword=can+you+take+benadryl+with+tramadol
    • https://cdn.sqhk.co/mibemofega/hi5jceP/rolling_ball_pen_vs_ballpoint.pdf
    • http://ch-bewertung-2888.xyz/8444340752170g3l.pdf
    • http://natur-bio.space/nupemaxa2314l.pdf
    • https://cdn.sqhk.co/gotulurowav/gjqEWrg/azamara_quest_cabin_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4454171/normal_60585aaf8a1c5.pdf
    • https://cdn.sqhk.co/tomubozes/rhahazr/bdouin_muslim_show.pdf
    • https://cdn.sqhk.co/gukisafuw/bUY0Fca/1664099014.pdf
    • https://cdn.sqhk.co/zarepowake/4jejcgc/ces_2019_tech_trends.pdf
    • http://xazonojader.mywebcommunity.org/24415896074.pdf
    • https://static.s123-cdn-static.com/uploads/4443357/normal_5fc7f7ba79a64.pdf
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5fd80713b83ce.pdf
    • http://max-lifting.store/62141827923qfrb0.pdf
    • http://dabedera.mygamesonline.org/amistades_toxicas_libro.pdf
    • https://cdn-cms.f-static.net/uploads/4380871/normal_601d96f2d9d7e.pdf
    • https://static.s123-cdn-static.com/uploads/4443578/normal_5ff0a80623ab9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6b2f37ea-3696-4b87-858b-663c379f6f6f.filesusr.com/ugd/16879a_66778d40492a44fcb009e23852994033.pdf?index=true
    • https://s3.amazonaws.com/getizar/blackberry_classic_disable_dial_tone.pdf
    • http://lobopekogolo.onlinewebshop.net/d-link_dir-890l_ac3200_router.pdf
    • https://79d8ee67-2172-45f8-9737-086b37aa5bdf.filesusr.com/ugd/2ab2ae_bf5064aab29e42148a6937e19ac5815d.pdf?index=true
    • https://s3.amazonaws.com/tigovatolis/garbh_sanskar_book_read_online_in_marathi.pdf
    • https://s3.amazonaws.com/luworizesupox/72060409192.pdf
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_cc161e85700f4b098b62c5a62c27f376.pdf?index=true
    • https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_d5943a1141fa4f54963ef3e80a41b824.pdf?index=true
    • https://s3.amazonaws.com/figugipopar/outlook_app_default_calendar_android.pdf
    • 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_off0001060d.bin
329a1488f64811be6433e4fd67d98bb1a5430ed798c6e841bb75a11e6ea0d883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1060D 5188 bytes
font_01_sfnt_off0001179e.bin
9d4cc52c7e2ff75efe3af58300f12e2bee552e1e4331501b66b5d4f6817a3a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179E 10880 bytes

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