Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14aac799bac0b41…

MALICIOUS

PDF

80.9 KB Created: 2021-03-15 22:33:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e4e5a138ce99fdbc89c96ed49972eb1a SHA-1: 885b23f27ae61de7d971600e20c81feca63b97be SHA-256: e14aac799bac0b41a28b7ff1b351d6a25ce2f001cbcc6b21b34f173cfe97a9fe
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9995

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 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.
  • 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://leonvi.ru/wix?keyword=printable+secret+santa+wish+list+form PDF link annotation
    • http://idealslimitalia-oficial.site/slow_motion_editorqa1mx.pdfIn PDF document text
    • https://nosevale.weebly.com/uploads/1/3/2/6/132683459/pegebiduz.pdfIn PDF document text
    • https://kiniwotonupit.weebly.com/uploads/1/3/0/7/130776343/9244614.pdfIn PDF document text
    • https://nodararikerat.weebly.com/uploads/1/3/4/8/134885074/12a3e3d57b1.pdfIn PDF document text
    • https://zizovelet.weebly.com/uploads/1/3/1/3/131380569/2933003.pdfIn PDF document text
    • https://basavorulifa.weebly.com/uploads/1/3/4/8/134899730/vuxixebijiweri-gisisuj-lupuzi.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/majora_s_mask_n64_guidegbfh5.pdfIn PDF document text
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/6995246.pdfIn PDF document text
    • https://vowemiwa.weebly.com/uploads/1/3/5/3/135392560/d9cd3d1774e2.pdfIn PDF document text
    • http://prosale.company/catalogue_marjane_octobre_2018v66pu.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/6e8d2edd50e027.pdfIn PDF document text
    • http://hookup153.space/tanzania_one_bongo_movieb9sl0.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://s3.amazonaws.com/kodipopujufipig/dixikaf.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/62629593480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fdd5235-8560-43bd-9105-4d532d8602a6/how_to_make_ethanol_hand_sanitizer_smell_better.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/lirunivego.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/reludiwikotilasusekomej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e059fe-0d47-4596-ae66-1ad6852dfdc7/does_ashton_kutcher_have_any_siblings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4010b616-b00a-4f11-9a76-fa9f31d776e1/codigo_ascii_para_o_con_tilde.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/vajusojugolidogujuzizode.pdfIn PDF document text
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_f78dbc80a2434070b019f89de13f28f2.pdf?index=trueIn PDF document text
    • https://e29a9437-b0a5-48a6-9afa-908397ce514a.filesusr.com/ugd/16a9c1_14e44009e5284e38bae48e2e33824fa2.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_off0000efc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC9 5144 bytes
SHA-256: fb4f0fc3357f2e78412229f8ac3b0cdfe5e88e82b893b7ea97ab1b146cc473a4
font_01_sfnt_off00010115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10115 10920 bytes
SHA-256: 6587873b5ff0f31f381d0d1ab8d985d9397e72ba5631fb81e3ff8f799cccdbed
font_02_sfnt_off00012630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12630 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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