Malicious PDF — malware analysis report

Static analysis result for SHA-256 edac3e8a0d143aed…

MALICIOUS

PDF

75.1 KB Created: 2021-02-10 08:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e7c71fda7a8f9e40be75c8790b560549 SHA-1: 008393712394201f440164e72bd64b33714f7b29 SHA-256: edac3e8a0d143aedb614b82018d27df927d12dbe1610c488002e33e8f05f771a
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a large number of external links, including a link farm heuristic, suggests the document is designed to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or SEO manipulation attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://druttle.ru/wb?keyword=income%20guidelines%20for%20food%20stamps%20in%20missouri PDF link annotation
    • http://secureappeal.com/helplessly_hoping_song_download4psb4.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/3460083.pdfIn PDF document text
    • https://pesefusuf.weebly.com/uploads/1/3/4/4/134486856/tiwufonubibevesuwoxu.pdfIn PDF document text
    • http://bestsalestoday.xyz/diagnostico_clinico_definicionbfqeg.pdfIn PDF document text
    • https://refiraledekire.weebly.com/uploads/1/3/4/7/134715744/b4ce6c094324.pdfIn PDF document text
    • https://sakolepak.weebly.com/uploads/1/3/4/5/134588428/2a0cd4ead2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_5ff5d2d2bb46e.pdfIn PDF document text
    • https://rokerisokexojud.weebly.com/uploads/1/3/0/7/130738924/3369208.pdfIn PDF document text
    • https://bobiputab.weebly.com/uploads/1/3/2/8/132814039/sunuw.pdfIn PDF document text
    • http://hookup153.space/820334888751ks57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501206/normal_5fd0febdb2831.pdfIn PDF document text
    • https://binazinir.weebly.com/uploads/1/3/4/1/134108718/jozigirako.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/rodakarugupoko/wallpaper_anime_girl_cute_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/noredusuduxutozogu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/sepuvavina.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/raworaxazo.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/95691144311.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/escape_room_answers_level_138.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96A 5412 bytes
SHA-256: 70993109cc698586961669e4dcf23cb030e05a8b5ff04786cc2162d248cabce3
font_01_sfnt_off0000fbc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC2 10436 bytes
SHA-256: c5e2e365caa36021979080dc701d1903c6d86e6c6b9a5d210c1957d4b83af960

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