Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74d902066d0022e…

MALICIOUS

PDF

88.6 KB Created: 2021-04-19 19:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ad9e2b2db4094a16af41693322d30836 SHA-1: c711e0f81968b6204b53d2a10088ebb8e8ccd735 SHA-256: b74d902066d0022ee476bdf2bcfee962484c21ab6eb9515065c9c077efafcff2
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Htc one m8 charger price in bd', suggesting a lure for a phishing or scam campaign. The presence of multiple external URIs and link farm characteristics further support a malicious intent, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=htc+one+m8+charger+price+in+bd PDF link annotation
    • http://pmaider.com/22665507014qjd9r.pdfIn PDF document text
    • http://fadekitexef.iblogger.org/robonik_biochemistry_analyzer.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/problem_solving_quality_tools.pdfIn PDF document text
    • http://comp-arenda.site/vilujefu65yva.pdfIn PDF document text
    • http://tipenedebila.22web.org/38670842633.pdfIn PDF document text
    • http://fomigiv.mypressonline.com/cnc_sheet_metal_bending_machine.pdfIn PDF document text
    • http://nnorm-id.com/411046059007nk7n.pdfIn PDF document text
    • http://getyourcredit.info/mefukegaxerexipikukosofa6yjtd.pdfIn PDF document text
    • http://gisowutuxa.22web.org/127341992.pdfIn PDF document text
    • http://fusekimutoxi.sportsontheweb.net/burger_king_get_apple_pay.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/dotapavibovopavumepewakiz.pdfIn PDF document text
    • http://fastcreditcheck.info/why_isnt_my_lg_remote_not_working6603x.pdfIn PDF document text
    • http://pixujuxe.mypressonline.com/64407850274.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosawakudik.myartsonline.com/broncodilatadores_b2_agonistas.pdfIn PDF document text
    • http://lanosebezazov.onlinewebshop.net/behavioral_therapy_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/burodidetedi.pdfIn PDF document text
    • http://bolesumedinix.rf.gd/jakatesinideluzinef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac870d21-a43e-4ad2-a223-2e3b13bc9105/can_you_row_on_a_bowflex.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/xexonijozekaja.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/barinowusajoli.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/bradford_white_water_heater_m1tw50s6fbn_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41c0c4c9-ec25-48f0-a904-6e75f99badce/81844270570.pdfIn PDF document text
    • http://tugurodegid.rf.gd/resume_template_word_2010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d632dd52-3f32-4777-9425-161c68d4cf58/zajodep.pdfIn PDF document text
    • http://vutogebufuz.myartsonline.com/lonely_planet_egypt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba635bf3-c0b9-41be-bf2c-3247c5475d51/24164059149.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/ruger_p95_grip_tape.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/autocad_2020_rendering_tutorial.pdfIn PDF document text
    • http://pizuzol.onlinewebshop.net/how_to_reset_bosch_500_washer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F3 5572 bytes
SHA-256: d6ce21fb579fe240fc0bba06907dfd311c69b21068ff4bba4bb828b8f088112d
font_01_sfnt_off000116af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AF 11788 bytes
SHA-256: d50fb6231197aa9328d2272c401459a58f05b3ef5c9801f907ce192e097c1824
font_02_sfnt_off00013ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED2 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501