Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2dc0517dc10bb8…

MALICIOUS

PDF

76.1 KB Created: 2021-02-25 00:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 06a382f63b3cee160283de2601cfea77 SHA-1: 29aa4c2ffadc68da6905bb324b1ff2dcf90a815a SHA-256: 1d2dc0517dc10bb880c313c7359fadcb98375c75609048a335a2561d3c3c011f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The document body is heavily obfuscated, but the presence of external links suggests an attempt to redirect the user to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=gender+through+the+prism+of+difference+5th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/kiranagel/SrJB1DZ/19804235241.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fe387b8d0d2a.pdfIn PDF document text
    • http://weareanonymous.org/zanumawubujokobutj8i2e.pdfIn PDF document text
    • https://betisifi.weebly.com/uploads/1/3/1/4/131438474/funisef-kelogofetunixuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449604/normal_5fdd720a069ea.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/parotafo.pdfIn PDF document text
    • https://cdn.sqhk.co/munoforifuso/Koo3icw/zagavojekuwewuxoja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403672/normal_5ff01f0e95898.pdfIn PDF document text
    • http://burolona.22web.org/21690364853.pdfIn PDF document text
    • https://ruzuwigowan.weebly.com/uploads/1/3/1/4/131453288/9642306.pdfIn PDF document text
    • http://xupafujiga.22web.org/sofoji.pdfIn PDF document text
    • http://vikorurapufor.iblogger.org/slick_rick_songs_free.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/sugowubuf/vcop_pyramids.pdfIn PDF document text
    • http://zozadugaweguj.epizy.com/45922547987.pdfIn PDF document text
    • http://pofuwumol.rf.gd/avery_address_labels_6_per_sheet.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_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5484 bytes
SHA-256: 1a5eb4477b06ce510701335ea4f22b62c9ebda6a6378fd7067877f1d10816ce9
font_01_sfnt_off0000fd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5D 10940 bytes
SHA-256: bd0fff720c9ca12f34513e3e5aaf6f4c61c3d9ac0011e43279198a39cb81c57a

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