Malicious PDF — malware analysis report

Static analysis result for SHA-256 129d63971db0b0ae…

MALICIOUS

PDF

79.0 KB Created: 2021-03-13 17:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9ad8a819d38642250ac28af1407faad0 SHA-1: 341bef09c81d18b393e0ce380b59f44fcb607b80 SHA-256: 129d63971db0b0ae9af4f980abc2719d92184d150fbeb736a9f9a9e74e7985bf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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://mezovuduw.ru/wix?keyword=coupons+for+jostens+yearbooks+2020 PDF link annotation
    • http://tameenegypt.com/jifuxitikupc5llf.pdfIn PDF document text
    • http://italiahot.fun/drop_kick_me_jesus_piano_sheet_musickwxv0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482018/normal_5ff0890361a8b.pdfIn PDF document text
    • http://difavusimope.iblogger.org/21763380725.pdfIn PDF document text
    • https://tevupuzenoxa.weebly.com/uploads/1/3/6/0/136009769/gejeg.pdfIn PDF document text
    • http://hookup754.fun/love_and_respect_conference_dvddunpc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5fe6764ae90f9.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/3355836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_6021a03812adf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5fdae1559ef24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496616/normal_5fd273b45b102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_60417da902146.pdfIn PDF document text
    • https://wotuvinuvokotar.weebly.com/uploads/1/3/5/3/135330473/761a21f79b32.pdfIn PDF document text
    • http://dream-stat.ru/26317093788cwb9s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipibezepipes.rf.gd/navusu.pdfIn PDF document text
    • http://dogivazisuj.rf.gd/38613987752.pdfIn PDF document text
    • http://leporib.epizy.com/45277250372.pdfIn PDF document text
    • http://zopegekole.rf.gd/70719563962.pdfIn PDF document text
    • http://wawuzir.epizy.com/shiva_bhakti_songs_in_telugu_free.pdfIn PDF document text
    • http://kenizuz.epizy.com/active_and_passive_voice_worksheet_class_6.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE099 5424 bytes
SHA-256: d14ffdda4755611a825c5db4f2b725b5c945d1f594eb20422a710e1140e0ef00
font_01_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 11020 bytes
SHA-256: 31e3d982cea06862b751eb29d480c96dcfba2547b0eafcd0317238f923b3aca4
font_02_sfnt_off000118dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DC 16172 bytes
SHA-256: 0a451a1f55ca6eb312d7e7a64bf2a2ebc13cd36f8983df6b8372e853b63d2709

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