Malicious PDF — malware analysis report

Static analysis result for SHA-256 14171318e7ef6a3e…

MALICIOUS

PDF

76.2 KB Created: 2021-04-18 09:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a89fd860b6c76f24c7f1f90d83ca7344 SHA-1: c3d574dd38e56cf5d9ce724c1d32fd7782c3c4e7 SHA-256: 14171318e7ef6a3eac283ff69bf6a229f4333cb3d4060543eede55f4219ffdc0
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 0.9997

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://lozipotod.ru/strik?utm_term=a+is+for+activist+read+aloud PDF link annotation
    • http://tadurarawi.mypressonline.com/electrical_circuits_basics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5ffc26b03f058.pdfIn PDF document text
    • http://zolepop.mypressonline.com/carcinoma_papilar_de_tiroides_tratamiento.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379237/normal_5fcca3e0caf37.pdfIn PDF document text
    • http://axecheat6.xyz/linear_algebra_friedberg_5th_editionik2xj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417429/normal_5ff9978c94610.pdfIn PDF document text
    • https://dubujede.weebly.com/uploads/1/3/4/6/134607356/jazejisizopu_desevopulujepas_jadijarexovemur_radiwilavi.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/4274167.pdfIn PDF document text
    • https://romenugerod.weebly.com/uploads/1/3/5/3/135317494/8752860.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fd7995cced7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470535/normal_5feee63bce00e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379723/normal_5fc8d5507f317.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476445/normal_5fcbd70b14e2f.pdfIn PDF document text
    • https://nuvitofoje.weebly.com/uploads/1/3/4/6/134640236/bedusebowajojez-pisavel-situbajogo.pdfIn PDF document text
    • http://ses-paypal.com/emerson_digital_room_thermostat_1f80-04712g0zc.pdfIn PDF document text
    • https://buduruzuled.weebly.com/uploads/1/3/2/6/132682090/9ac03.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/mawesenasijoser/fakanujul.pdfIn PDF document text
    • http://riledabetime.myartsonline.com/definition_of_social_media.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/airtel_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/whats_the_best_class_in_eso.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_off0000eda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA0 5064 bytes
SHA-256: bf90b2c4d781ba9b21a7cd9fadc52a4564ac215ed924258e20d1072d573ed23c
font_01_sfnt_off0000fef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF0 10872 bytes
SHA-256: 4429403285de0ea67280afd1ac085d7296d99472e4dc4c3e6097cdc37fb81e8d

Open this report in the interactive analyzer, or submit your own file for analysis.