Malicious PDF — malware analysis report

Static analysis result for SHA-256 be12849daece0d1b…

MALICIOUS

PDF

76.8 KB Created: 2021-03-15 13:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 358bc7759e58b82048e5a07aaee70554 SHA-1: 7d50df4b686fb94eb06ad7fd582f22636112381b SHA-256: be12849daece0d1b342cf72d828fc8c49ecaa7d02a5f5ce4d0791a6d4bf744a4
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, with a primary one pointing to a site offering 'clash of clans hack ipa cydia impactor', suggesting a lure for users seeking cheats or exploits. The PDF's structure and embedded links indicate it functions as a link farm, likely directing users to malicious downloads or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/wix?keyword=clash+of+clans+hack+ipa+cydia+impactor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425784/normal_5fd088b38f35a.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/ehgg4jc/walking_dead_season_10_episodes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415061/normal_5fc7965d7e1bd.pdfIn PDF document text
    • http://instapriz.website/aspen_critical_care_guidelines_2016covnk.pdfIn PDF document text
    • http://topdouche.xyz/inventory_spreadsheet_template_printable9ls5g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385853/normal_6028b66d73e3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_600b438bc9604.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/hajgheB/29361814264.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/jgicgd2/imf_jobs_taleo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422385/normal_601e76c189df6.pdfIn PDF document text
    • http://podjem2.club/wondershare_editor_3._9._11._98t29e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_603092a358bdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_600c752917477.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c0771fee-1ba5-4dbf-bba5-a775c3d44c03.filesusr.com/ugd/544e7e_35bfa97e74434fbf90bd016b1cec3976.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/8d_corrective_action_report.pdfIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_02ee0a09c4e54bf089f8e32a5894353d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poresi/55312814629.pdfIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_d969f746b9174c2c93b1468ca86497c5.pdf?index=trueIn PDF document text
    • https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_93a5ee56a1084c13b881668577034c1c.pdf?index=trueIn 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_off0000ed82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED82 5464 bytes
SHA-256: b060432c970d624088c7a51c5f537b7fa98c8bd14a2e252ef740c8ef4762ff1a
font_01_sfnt_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 11132 bytes
SHA-256: 18f2e355dfa9acfd1461e3b82254cee1d799e4558dc4f893a9811cb0148a8d46

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