Malicious PDF — malware analysis report

Static analysis result for SHA-256 34876998fa6142b2…

MALICIOUS

PDF

87.5 KB Created: 2021-06-17 15:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f3e5a0af87e9e4e65c9d9bac90f87ca8 SHA-1: d7645d9ea4ddf747d07e7b66aa479753b286a6b0 SHA-256: 34876998fa6142b2d4010c97252036a4b14678bb22488d288df8da813e5bd534
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm with numerous URLs pointing to compromised websites, likely designed to host and distribute malicious files. The document body, though heavily obfuscated, suggests a lure related to downloading free motivational books, a common tactic for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=malayalam+motivational+books+pdf+free+download PDF link annotation
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/tdrtsq8crdvut39mjfrki8ua57/jonozuguv.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bad851745c8---kedudimizesinad.pdfIn PDF document text
    • http://dongphuctqueen.com/upload/files/reduviwajet.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/prgf6l80t0lssivuudbsda57f2/94456089442.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/2345ed1812de31007310357507f3fe19/runofinaxikokivutadabiji.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160c02db317ae6---29485466630.pdfIn PDF document text
    • http://nensi.si/upload/file/fozovidab.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/ijmv5ua3q9fkvuhl4urghik8gg/2697815938.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca82a0f4d0---januxewaduninirawajisun.pdfIn PDF document text
    • http://falerisztika.hu/tmp/maziwep.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/64653774026.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/wokitosubusidinawowebanus.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786179778f3---66994007396.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/1482ed2c5d70b4b12b3e2d9ea85ee09d/57583444705.pdfIn PDF document text
    • http://abpaluso.com/upload/file/66043547962.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/f84ae1af0b624ba731a51e84238b4e45/gupugefejelop.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/b409a0f637c4b6c309b6cfd83d3198e0/pakaginolewika.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/9214b1a04ac5dddb43f8b03d2f4916cd/tatijimarotopujewupinonor.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/eugdlpeh1s1i2tikon6a7dn490/joxiwuseli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn 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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001006b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006B 5648 bytes
SHA-256: fd63f408bdb9d78b11d6c3ec472286b0e57e3b674278c835fcd4efa2be97df24
font_01_sfnt_off000113a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A9 5128 bytes
SHA-256: b22ef044fd4eb2aa6d9cb128a9ae0d8128e099f11a4a0d704b458d6deda4fadd
font_02_sfnt_off000126a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126A1 12020 bytes
SHA-256: 4566f8daf728ac75a0b01ee5a6eb16d2c6cdd4eca490afbf1eb684e741130aa8

Open this report in the interactive analyzer, or submit your own file for analysis.