Malicious PDF — malware analysis report

Static analysis result for SHA-256 f814857f8c55bb83…

MALICIOUS

PDF

84.7 KB Created: 2021-02-28 09:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: db1e6c6abfa2e89cf260b8d56e21d812 SHA-1: a095f95da7fcb51b48bdce988af72b59af4d8132 SHA-256: f814857f8c55bb836a04ca9581fa1ab6a75dd71c15743c21418b132898a76d7d
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically referencing 'Fedex printing and shipping center near me', suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing campaign, likely attempting to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=fedex+printing+and+shipping+center+near+me PDF link annotation
    • http://yesnutural.space/makalah_bani_abbasiyahk6jv5.pdfIn PDF document text
    • http://dopenukivo.22web.org/mubirogifovikeduwa.pdfIn PDF document text
    • https://cdn.sqhk.co/bibobovezave/hjgjjdG/lomudifukobe.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/EsKiaPp/wexudan.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/cgi3GDN/33568206904.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/hbhagic/rinosejateforikaxebik.pdfIn PDF document text
    • http://migerov.xyz/excel_format_cell_first_letter_capitaltw9de.pdfIn PDF document text
    • http://openchambre.xyz/daffynition_decoder_answer_key_d-_62cr7wr.pdfIn PDF document text
    • http://begemotiks.space/7993407999j40q7.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/3MNwiiZ/38072738872.pdfIn PDF document text
    • http://ribozigokadime.iblogger.org/how_can_i_use_projector_without_remote.pdfIn PDF document text
    • https://cdn.sqhk.co/jadidawa/hZBg4Fc/charli_d_amelio_pictures_new.pdfIn PDF document text
    • http://itfamily.pro/13254245755z8dfz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://segalemu.epizy.com/jusufebisoxiw.pdfIn PDF document text
    • http://dunogulazemetus.epizy.com/54613956104.pdfIn PDF document text
    • http://ziwitiko.epizy.com/luxalutiguwarunibewedeku.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F01 5480 bytes
SHA-256: 27b91f84d759f90b8b79e4c78e1a754a39c2bd05f22a37d8be84cf964cbb55e3
font_01_sfnt_off00012184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12184 10492 bytes
SHA-256: 5888a1e32dd7ef15a04c643243d53be4dd7a1a3bae16fc8a00a40a171f2bf0cd

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