Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8aece84d76833e8…

MALICIOUS

PDF

86.4 KB Created: 2021-03-15 05:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 35512a8eb892ca75be313b458aae8fb9 SHA-1: 52cf4dffee31a40bdc2811fe4f31a99399dfe676 SHA-256: e8aece84d76833e856ae5345aeab8e2fbc5274d2f7e1d1326015aa217c39acd5
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains and are likely part of a link farm designed to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=magic+the+gathering+swamp+art PDF link annotation
    • http://latencfsrt.space/wunofekono1rebp.pdfIn PDF document text
    • http://manovina.mypressonline.com/30699769312.pdfIn PDF document text
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/d3f22936e9ee.pdfIn PDF document text
    • http://soinjaga.ru/24233759844gpbjv.pdfIn PDF document text
    • http://runmasten.online/aankhen_full_movie_videolo07y.pdfIn PDF document text
    • https://sabexinutix.weebly.com/uploads/1/3/0/7/130740027/f0187.pdfIn PDF document text
    • https://rojuligu.weebly.com/uploads/1/3/0/9/130969709/badupapowovagemo.pdfIn PDF document text
    • https://dokakuzod.weebly.com/uploads/1/3/4/8/134884054/7385875.pdfIn PDF document text
    • http://unonatur.space/zakugevamudogubesetfwiy5.pdfIn PDF document text
    • https://dopovubejaxow.weebly.com/uploads/1/3/4/0/134017692/fopuled.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/megelugik/25362610525.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/midamedodizedogagugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77fc11dd-5c51-42f5-a308-7c9bd60427d7/if_i_drop_a_tennis_ball_and_a_bowling_ball_which_will_hit_the_ground_first.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aafc69b0-3682-4429-bfd2-6fa63c1c88f4/5541710600.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/bukorexevuxuganuxuw.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/best_iphone_spreadsheet_app_free.pdfIn PDF document text
    • http://totuxivez.onlinewebshop.net/fitolasoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e321a464-7a71-4339-957e-9f2ffc3f361d/43640264528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a88314-0b3a-4194-8c70-279b357cf159/what_does_dog_symbolize_in_dreams.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/shaco_ap_jungle_guide.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_off00010779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10779 5092 bytes
SHA-256: d9aaf7c181863ead7a34c413b4f85af48842f1b9cce2a19ca8f83cf8b39d777e
font_01_sfnt_off000118a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A0 10916 bytes
SHA-256: bda3a5695149513a84d1ae1b064900362e087656e28ed0919e5ca3301d4a5688
font_02_sfnt_off00013de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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