Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d07de1fd27a73db…

MALICIOUS

PDF

73.1 KB Created: 2021-05-08 23:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 974826792a5c2fbf3569286ca65f9b32 SHA-1: 5709fc5dd3949765529aca674d6341163fa88100 SHA-256: 1d07de1fd27a73dbf80ec7955bddbfe3ac0c691cf1f3da5f67113cc96d296e23
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 domains and flagged as link farms, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of social engineering lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/strik?utm_term=how+to+go+about+building+your+own+house PDF link annotation
    • http://copyrightsupportforlnstagram.com/science_of_sports_training_thomas_kur01nf.pdfIn PDF document text
    • https://rofixuninapo.weebly.com/uploads/1/3/5/3/135313709/2957705.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzozuni/kYDzthb/86286388098.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxumududu/BhgdLgy/heroes_of_the_storm_genji_guide.pdfIn PDF document text
    • http://vowewudimo.mypressonline.com/vida_y_doctrina_de_los_grandes_economistas_gratis.pdfIn PDF document text
    • http://pop-marketplace.ru/what_is_manual_j_calculationsr399.pdfIn PDF document text
    • http://liwadaxezaf.getenjoyment.net/yours_elevation_worship_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/fghbjcp/35322635108.pdfIn PDF document text
    • http://amst-watch-v1.club/700287290260r4o4.pdfIn PDF document text
    • http://iciapp.xyz/14779164379u1ye6.pdfIn PDF document text
    • http://daxamel.mywebcommunity.org/zakafejaliguxa.pdfIn PDF document text
    • https://zegoliro.weebly.com/uploads/1/3/2/3/132303320/kuburul_gagir_vipuz.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/kelewexozupi.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/cphakih/app_assistant_huawei_not_working.pdfIn PDF document text
    • http://helpcreditscore.info/do_pink_pregnancy_tests_have_evap_linesqrb7j.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/kFwjijb/best_photo_editor_ipad_pro_2020.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/jazuravazaguz/63174791391.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/vawixuxijiwutebebonu.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/96230794527.pdfIn PDF document text
    • http://kixomeremit.epizy.com/eager_beaver_chainsaw_parts_list.pdfIn PDF document text
    • http://vozonagorelomur.epizy.com/le_dualisme_cartsien.pdfIn PDF document text
    • http://kemixirutuj.epizy.com/muveropat.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/battleon_stats_guide.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_off0000ddf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF8 5384 bytes
SHA-256: 686b4db91374d31ecaae3516f405c2e7af7861baffcae6c5e06c2c22af4e445d
font_01_sfnt_off0000f04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04E 10804 bytes
SHA-256: 1bd693c6159c38fe47b01a3af376f14c92e9d3f7666d43201198d02c46871f76

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