Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc2fcb0a02898c3…

MALICIOUS

PDF

101.1 KB Created: 2021-03-28 16:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b39c0ec6e2135d95cbdf101f7a7c6ed8 SHA-1: e8b890c8758413c71eeee492467dea68c16a34f5 SHA-256: 1fc2fcb0a02898c39bbd763346d8423588a75f4df3f40e1c639602f2be898ae8
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are SEO-farmed, suggesting a phishing or credential harvesting attempt. The heuristic 'SE_MFA_LURE' indicates the document is designed to trick users into providing sensitive information, such as one-time codes or MFA approvals. The presence of external URIs and a high ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://ponafet.ru/award?keyword=ycmou+ba+admission+form+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384828/normal_5fed1ed314a60.pdfIn PDF document text
    • http://clebohets.xyz/samsung_crt_tv_service_menu_codesbaf02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503767/normal_5ff8cb9ca5d93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_6035ab7fc0174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481684/normal_5fec6c59494df.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/971087079133aqjf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450438/normal_6047c99570b3a.pdfIn PDF document text
    • http://wabexikorininaz.22web.org/banana_boat_sport_performance_spf_30_review.pdfIn PDF document text
    • http://legendbilisim.com/age_of_empires_2_macbook_airhz4ei.pdfIn PDF document text
    • http://carluxepaint.site/kusetanfqlze.pdfIn PDF document text
    • http://sifimomikev.sportsontheweb.net/jobesuvakivefevopunizanam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5fdaaa1c2cdd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_601689a0dc6c3.pdfIn PDF document text
    • http://maxoranano.sportsontheweb.net/performance_appraisal_projects.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388813/normal_5fe47f0d80445.pdfIn PDF document text
    • http://fejavodexata.getenjoyment.net/bosch_service_logo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451940/normal_5fff95b616c2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://lamezidame.rf.gd/how_long_does_it_take_a_speaker_to_charge.pdfIn PDF document text
    • http://zopatirek.epizy.com/mumixakofokomebi.pdfIn PDF document text
    • http://xudofudule.rf.gd/9586111678.pdfIn PDF document text
    • http://fozilixugijuva.epizy.com/the_power_of_love_celine_dion_lyrics_translation.pdfIn PDF document text
    • https://f7690f66-1871-4559-97e0-239dee5b15da.filesusr.com/ugd/d2cc1f_c3e5162b0ddd40aaa97b57c196a54668.pdf?index=trueIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_f304e2e5e88a4c5d95fe8cbccd855bd7.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
    • 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_off00011375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11375 5368 bytes
SHA-256: c4ea6b89221e5b57de32b3930efc70011eaebd07368cfb653acecc4dbfaa0816
font_01_sfnt_off0001259d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259D 11340 bytes
SHA-256: 0810279ffe8995d239a557e37a9ab1ba61597503f855728ec0110c85b93aab21
font_02_sfnt_off00014cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC1 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_03_sfnt_off00016213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16213 11360 bytes
SHA-256: fb25738db147e3cedd268ef98b8371c29d2bbcde6dc9ef93ce13f23ce9eeffc8