Malicious PDF — malware analysis report

Static analysis result for SHA-256 f627141e7fcf1be8…

MALICIOUS

PDF

69.9 KB Created: 2021-01-23 19:14:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: a852ea72e540a1e309680d7ab486ccd5 SHA-1: e7797ea517f5c5e3acbfa9b2a4592a8d45110a8a SHA-256: f627141e7fcf1be87071c3866fedd652169174b5d68aa7e2bd83eb5759582d2a
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/aws?utm_term=autoit+script+recorder PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405197/normal_5fd22a5923bfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473651/normal_600a9ec45afb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413113/normal_5fc8fc4987bcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_5fd854371c92f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420036/normal_5fd31d4a805f2.pdfIn PDF document text
    • https://site-1257772.mozfiles.com/files/1257772/46022768232.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/sajezife/singh_is_bling_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/57310838250.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/afrikaans_dictionary_apk.pdfIn PDF document text
    • http://boraxijud.epizy.com/kezuvanulexiralozapali.pdfIn PDF document text
    • http://kedogevakubonog.epizy.com/atom_heart_mother.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/tf2_spy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/sample_balance_sheet_and_income_statement._xls.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/17491162896.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/27873228403.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_off0000d51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51C 4812 bytes
SHA-256: b6bf2d8dbe921fd37e4768ca42e8ebd92eb632b5ccd20b38a9659119830ac08f
font_01_sfnt_off0000e589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE589 10956 bytes
SHA-256: 5913324ef64d4bbfdef51102b20502654664445fcc7be7f6c77fdf7cd898130a