Malicious PDF — malware analysis report

Static analysis result for SHA-256 62577fcee9c1653b…

MALICIOUS

PDF

70.8 KB Created: 2021-09-12 12:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: af3245566db1d493aec196dfefd268c3 SHA-1: 567863947201cd00d84d98a50460cfb2750fee57 SHA-256: 62577fcee9c1653b71a5637a660edfe76e0597d1423b1cb48a3c057875aca8b2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with one specifically pointing to a URL containing 'download iptv extreme pro apk', suggesting a lure for potentially unwanted or malicious software. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=download+iptv+extreme+pro+apk PDF link annotation
    • http://unseretochter.com/images/file/varegosejutebud.pdfIn PDF document text
    • http://arnoldbolingbroke.com/ckfinder/userfiles/files/2784850142.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/89607069428.pdfIn PDF document text
    • http://botaierpharm.com/upload/files/lerokib.pdfIn PDF document text
    • http://fullx.net/files/modomisubixelojemebivur.pdfIn PDF document text
    • https://hamzsabegi60szallo.hu/UserFiles/File/34557783247.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/161348c7d81435---12992607105.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/dikevexaligo.pdfIn PDF document text
    • http://studioguagnoni.it/userfiles/files/zosise.pdfIn PDF document text
    • http://coumert.com/images/file/rovubasepifulenopew.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/vasikiledarajegitujomam.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/87526005243.pdfIn PDF document text
    • https://hainutedecopii.eu/ckfinder/userfiles/files/15818856803.pdfIn PDF document text
    • http://hwayinn.com/image/files/20210902_061716.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613a63fa8427c---zefarovipaz.pdfIn PDF document text
    • http://roletyhanarol.pl/files/file/67480524730.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202109061754025822.pdfIn PDF document text
    • https://discovercefalu.com/_data/images/file/juxemodawokazemu.pdfIn PDF document text
    • http://euroear.eu/ckfinder/userfiles/files/246486451.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/55845985163.pdfIn PDF document text
    • http://eyupsifalibitkiler.com/resimler/files/wefunitenukepe.pdfIn PDF document text
    • http://ukrkarta.ua/fckeditor/userfiles/file/38387531477.pdfIn PDF document text
    • http://internet-trade.cz/UserFiles/file/34619123793.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161301f5f0ec05---bilonogisivuv.pdfIn PDF document text
    • http://yeongwonenc.com/userfiles/file/74783887644.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F1 10732 bytes
SHA-256: 7d5e9c45c1b7fd503aa336a83d1c62c779114b497231f198f28115b0b218a1f1
font_01_sfnt_off0000cc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC99 16152 bytes
SHA-256: 6b15e0e249f29e49151d44c0918e18d16e9ef02b0c90d478a304c15d5378ad1e
font_02_sfnt_off0000f5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1