Malicious PDF — malware analysis report

Static analysis result for SHA-256 44eecbbf319ef0b6…

MALICIOUS

PDF

79.4 KB Created: 2021-04-08 09:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 56b9a04b1a365905ffcf198461f0972d SHA-1: 5408fac56156336aa889bdb2910e75fd341a166f SHA-256: 44eecbbf319ef0b6263ca6f9da9f651ecfcb17f2154bea204473a6ee7b6a90d3
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 0.9991

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://jottigo.ru/wix?keyword=white+pages+lake+st+louis+mo PDF link annotation
    • https://monokuzofo.weebly.com/uploads/1/3/2/7/132741222/f5073bbf509ac.pdfIn PDF document text
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/lutirijamerupupen.pdfIn PDF document text
    • https://mopebewugo.weebly.com/uploads/1/3/0/7/130776026/xazonikinovofu.pdfIn PDF document text
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/dfac90b48.pdfIn PDF document text
    • http://rodakadodata.iblogger.org/38368803918.pdfIn PDF document text
    • https://wadabugijiri.weebly.com/uploads/1/3/0/8/130873870/4588866.pdfIn PDF document text
    • https://piwevowukitibe.weebly.com/uploads/1/3/1/4/131454699/8964347.pdfIn PDF document text
    • https://bazunebusa.weebly.com/uploads/1/3/5/3/135397504/3690718.pdfIn PDF document text
    • https://mejotowud.weebly.com/uploads/1/3/0/9/130969644/1161672.pdfIn PDF document text
    • https://tojejalunegod.weebly.com/uploads/1/3/2/7/132710717/7259689.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/neporezofov/maintenance_des_automates_programmables.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/nezimupinijomapujegi.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/velocity_diagram_of_axial_flow_compressor.pdfIn PDF document text
    • http://vuvazapej.rf.gd/wording_for_wedding_invitations_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a2e11a-32af-4adb-ac6a-436d061ba570/logo_itil_v3_foundation_certification_verification.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/45884171614.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/24337124192.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/83998124911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a03869-daf5-4e49-a63b-d64bf0e12d4a/why_does_my_motion_detector_light_stay_on.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/wubitinefades.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/natural_way_to_draw_out_a_splinter.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/blank_space_song_lyrics_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a375de7-3a0a-4110-b038-85fc7a6f95e4/ministers_black_veil_audio.pdfIn 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_off0000ecf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF8 4992 bytes
SHA-256: 6fc0e936846f014adef84cca73830852c62cc8382fc9c38e9fb47328defec257
font_01_sfnt_off0000fe07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE07 10564 bytes
SHA-256: 1f5859b4c25659916364ff243aca29f99904b404dad81f2cc8007a76764d711c
font_02_sfnt_off0001223b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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