Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecce69931814144f…

MALICIOUS

PDF

81.5 KB Created: 2021-03-22 12:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ce8d17cd34d8399585a1fcc5ba00e52a SHA-1: 5803d8e56d79931f95f6208945e9d5dceffce4e8 SHA-256: ecce69931814144f1a84df7ce9d78b9dde2029ab6ffb9182b99af20ef3c58a7a
214 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to phishing or malware sites. The document body, though heavily obfuscated, appears to contain keywords related to garage door opener programming, likely as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=genie+intellicode+garage+door+opener+remote+programming In PDF document text
    • https://sinekagu.weebly.com/uploads/1/3/4/8/134855021/lejavu_linerulipefofum_wugole_midixop.pdfIn PDF document text
    • https://vawilateg.weebly.com/uploads/1/3/4/6/134697686/8cede28.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/77182114305.pdfIn PDF document text
    • http://xasedogamif.mypressonline.com/what_are_the_four_early_river_valley_civilizations.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/ropidadegaxut/the_lord_of_the_rings_full_series_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/ethical_dilemma_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6510f8-91c9-41f5-a354-e5780815f706/1st_grade_math_activities_printables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c92fbe2-5b7b-445a-8154-12f9f4fbbfa6/how_to_write_a_performance_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/49592699908.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/how_to_start_a_community_action_group.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea04746f-5d1b-42f5-bd12-1604437fa403/hp_photosmart_d110a_wireless_printer_price.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/29382278536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c925782f-04fd-491b-9f2f-c02da6096eaf/59156180150.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/79202638351.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/advantages_of_using_carbonized_rice_hull.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/86428222557.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/chitralahari_audio_songs_please.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/convert_cdr_to_jpg_format_online.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_off0000f22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 5036 bytes
SHA-256: 00f489f4e8ea76482bd65aace4a091b7d8dad3eba5f1d5e7c90ffc20ce397804
font_01_sfnt_off0001032f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032F 10848 bytes
SHA-256: ff3079371bb904d48cfac97ebd5735e7bb89cfb6f0bfba566fdb8a9c2d1b92c5
font_02_sfnt_off0001281e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1281E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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