Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f147e7e91968a6…

MALICIOUS

PDF

80.3 KB Created: 2021-03-04 19:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: da78b26b6f5fc526f8a1422ba5197fa4 SHA-1: 55a2f13db22963cde8fdb68e052374bc8c11cd05 SHA-256: d0f147e7e91968a65c7304bfad54dd06af19459c1662688b7957f29cf642f6dc
134 Risk Score

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/wix?keyword=panda+pop+cheats+iphone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408195/normal_600eb4117eff1.pdfIn PDF document text
    • http://rusakova.space/zulotitefag3oopg.pdfIn PDF document text
    • https://jelisewisu.weebly.com/uploads/1/3/1/4/131410299/b1eb3c8f005b.pdfIn PDF document text
    • http://indohealth365.online/amiduos_lite_64_bitan19i.pdfIn PDF document text
    • http://auth02mobility.com/que_dia_feriado_de_carnaval9fjns.pdfIn PDF document text
    • https://jefolujolu.weebly.com/uploads/1/3/6/0/136096950/mijadupudoxagojusa.pdfIn PDF document text
    • http://axecheat7.xyz/exploring_the_electromagnetic_spectrum_worksheet_answer_keyj3byf.pdfIn PDF document text
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/90156.pdfIn PDF document text
    • https://jetebudatupa.weebly.com/uploads/1/3/4/7/134748577/jegez_xiworevuwa_kifema_rofanin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5fd676799e07f.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/how_to_make_a_bridge_with_popsicle_sticks_without_glue.pdfIn PDF document text
    • https://jifosibupegexuv.weebly.com/uploads/1/3/4/6/134692258/xurinekemirudu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417528/normal_5fe70a352c9c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458824/normal_5fe44a09b38dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421780/normal_5fe55f094708f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501961/normal_5fdec850654be.pdfIn PDF document text
    • http://clubstore.info/world_war_1_worksheets_for_5th_gradei48h7.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/logo_design_contest_2021.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
    • http://vubuzixefixa.onlinewebshop.net/ezdrummer_how_many_computers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2a9a9b-0e26-436c-8ac3-a52b48803640/how_to_cut_sugar_out_of_your_diet_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c39c4d0b-a3ac-4591-938b-f202beb6c50f/verbal_reasoning_practice_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d929fb-9182-47b4-9f5c-cd08a31dba01/45875513153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a33ed0b7-f6ea-43ab-8ea6-503f93f3d9eb/84113447431.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF091 4824 bytes
SHA-256: 1eb5af802c6481e082dd83678d2f7a3e2bb97b32d1402e6330bf33804b2670d1
font_01_sfnt_off000100e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E4 10744 bytes
SHA-256: a3c27b722e1b16b7ea15aab202f42fcbd4b1570184deb2db7a6d02f9d22d84c8
font_02_sfnt_off00012590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12590 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176