Malicious PDF — malware analysis report

Static analysis result for SHA-256 089000dc2e532123…

MALICIOUS

PDF

81.1 KB Created: 2021-02-15 17:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: db4602bc9f1c8d2a30bb8254ac39dbd8 SHA-1: 9ae14f3130075fde86f69c06948772f254727fd3 SHA-256: 089000dc2e5321239ad3e7f95f5c3835dbcb4cf4e8f42598cb5cf7ea62b60108
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, contains strings related to search queries and product specifications, suggesting a lure to trick users into clicking these malicious links. No scripts were extracted, but the PDF structure and link farm heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yafferge.ru/strik?utm_term=dell+inspiron+one+2320+i3+specs In PDF document text
    • http://tiktokcopyrighthelpteam.com/kerala_weather_report_liveps1ow.pdfIn PDF document text
    • http://morj.space/desexepugokikosotopiloedoyo.pdfIn PDF document text
    • http://termometr-medikal.site/moksha_bellevue_yelpyz82y.pdfIn PDF document text
    • http://yoga-fitness.space/firestorm_viewer_for_androidjsbjk.pdfIn PDF document text
    • https://vodefuba.weebly.com/uploads/1/3/4/6/134688083/2fe1d9.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/c6fd0.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/ad805aa0e6fe.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/NiaeFHo/shelter_cove_apartments_latham_ny.pdfIn PDF document text
    • https://zupuluduwiwafop.weebly.com/uploads/1/3/2/6/132681460/xawexon.pdfIn PDF document text
    • http://sparzha.club/cat_s_cradle_novelcwgph.pdfIn PDF document text
    • https://pimazapodozem.weebly.com/uploads/1/3/2/8/132814260/fff887c7d.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/Egjfbha/bufusikajel.pdfIn PDF document text
    • https://rajuputodetu.weebly.com/uploads/1/3/4/6/134682309/54347a3bda25632.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nedijowewoded/angry_birds_transformers_new_characters_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/95564706268.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/ijazat_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/lutigafepuveb.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bphc_compliance_manual.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAB 4860 bytes
SHA-256: ed64a5f6936aeeb1e0f679461347d7e9b71dae9d0dece0f85ce84e9bab830432
font_01_sfnt_off0000eb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2F 11308 bytes
SHA-256: 30fe18c6a944f0b47ece97aac5e02f8f7a54c5044deaac5b9809362e5f64a8bd
font_02_sfnt_off000111d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D2 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off000126e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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