Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc9438278385bde…

MALICIOUS

PDF

71.5 KB Created: 2021-02-13 14:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 587328c8706660c9e68914405b69583a SHA-1: 232e139d6c6fe0a8e78701e477782c39269cb046 SHA-256: 2cc9438278385bde2a4ce5a89f153e2a1759743a00777154fdd9a5d5f0da6f85
136 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Post- style guide- ons for boat trailers'. No scripts were extracted, but the presence of external URLs and the overall detection profile strongly suggest a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/aws?utm_term=post-+style+guide-+ons+for+boat+trailers PDF link annotation
    • http://kuvuradivikosef.iblogger.org/aminoglucosidos_2014.pdfIn PDF document text
    • http://repair-planshetov.ru/metodivomizozamakepasas55f3.pdfIn PDF document text
    • http://educationonline.website/bowflex_dumbbell_workouto3oh9.pdfIn PDF document text
    • http://fitokaps.xyz/73697550904f5q4f.pdfIn PDF document text
    • http://info-pages.ru/baidu_antivirus_for_windows_10_free7himp.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/ibWgzge/social_media_marketing_planner.pdfIn PDF document text
    • http://help-nanny.site/g_force_race_suits_australia10rvz.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/pasawe/weather_report_boynton_beach_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/area_of_triangle_parallelogram_trapezoid_worksheet.pdfIn PDF document text
    • http://lepomosafajuki.rf.gd/braven_bluetooth_speaker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/drupal_7_template._php_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/15126767266.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/avengers_infinity_war_trailer_1_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/16112922683.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/48690290916.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/leadership_behavioral_interview_answers.pdfIn PDF document text
    • http://lowazuxakosilal.epizy.com/mebememowinasamux.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/32615109915.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7C 5352 bytes
SHA-256: 5a545eb4ff2d0ea24023be229e566f71745a4b74daa0ab55457cf6c88851649a
font_01_sfnt_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 10568 bytes
SHA-256: 8e2576ec32334714e4ca0248b9ac00da39aa7067540eec038d99225f2b70facb

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