Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c68ae2c14cee75f…

MALICIOUS

PDF

73.7 KB Created: 2021-03-25 18:37:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1cc2aa38a4081468f174aeb06ecf3d4f SHA-1: 59b98522d01547ab560c27a3a23940896fc29c69 SHA-256: 2c68ae2c14cee75fc353dda512443f80684cc2626e527ffa1fa3e8ab12b3c5c8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

Heuristics 5

  • 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 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/award?keyword=bodyboss+workout+pdf+free PDF link annotation
    • http://jeruxawi.iblogger.org/rubakowovidibomeduxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378848/normal_6059fefd38484.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/Hhcjgib/zarchiver_pro_mod_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/varugefezum/vNKjahf/barneys_farm_acapulco_gold_smoke_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464323/normal_6001beafa7676.pdfIn PDF document text
    • https://cdn.sqhk.co/zavipudajose/ejbiehi/tefuzilevizeg.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/ijfifgj/gold_rush_3d_no_ads_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414515/normal_602568aeb90ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/lanor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e615de37-a209-4af1-83e8-0969aaa13499/guwerew.pdfIn PDF document text
    • https://1ac5d900-0c69-4f12-8b1d-4e209472b8d2.filesusr.com/ugd/828753_9de5c13d02fd4f3d8032370e31958300.pdf?index=trueIn PDF document text
    • http://filabos.epizy.com/double_bass_scales_and_arpeggios.pdfIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_b8ae7e03ae3f4ccd9dcbcce2c8db254e.pdf?index=trueIn PDF document text
    • http://zirururifikelo.epizy.com/origin_server_not_responding.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504eb023-7fc4-4b00-9efe-74512a934dd8/where_can_i_get_jumper_cables_near_me.pdfIn PDF document text
    • https://e6c529cc-411f-4195-b5ea-7b5fd081490a.filesusr.com/ugd/b7ab08_c23b130fa7de4cb39c166efdff0ab398.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lonozote/braun_silk_epil_9_manual_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4fe06d-07fd-45d1-b4f2-b2ba9ae71fbc/98916465744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb48f59-8655-494d-9d08-9b86bc983b77/redowatopaxazamawi.pdfIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_fd6cce20add046cb99f1f439d032408f.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E6 5240 bytes
SHA-256: 9a13394bede1e12f4ac0dc5671f023465fc5a034f332070b36567d11ab0003dc
font_01_sfnt_off0000f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E3 10612 bytes
SHA-256: 38d4319070a91440c0ff0f5a25fb4ce866f5887374ea13d28d980f6d79020080

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