Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0ba6fc49fccc3c…

MALICIOUS

PDF

83.7 KB Created: 2021-05-25 05:05:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 12bbc10d2b287b2136dd26e499f23e5b SHA-1: dfd5f39574f5b14d3dfa4bfd9039e627ba048fd6 SHA-256: 7b0ba6fc49fccc3c09bcaf374d21c972b1fdf325ee98f90e331c0c15d38d1615
136 Risk Score

Malware Insights

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

The PDF document contains a lure related to poverty in Bangladesh, which redirects to a suspicious URL. This URL is flagged as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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
  • 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://maypoin.ru/strik?utm_term=what+are+the+main+causes+of+poverty+in+bangladesh PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419629/normal_5ff929bd2df97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471455/normal_5ff5ffcc488ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_60342b5e5eb43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369911/normal_5feeac9d8a2c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365584/normal_5fde8ca875811.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
    • https://s3.amazonaws.com/xijalovelokolep/56379076374.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/gepafomitofez.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/free_pet_adoption_day_chicago.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/23931984160.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/xekepupasideralizi.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/apush_chapter_2_review_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/pisulifa.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/online_reference_apa_format_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/napozegobuvaduzipojezot.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/carnival_cruise_donation_request_form.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/the_ridiculous_6_movie_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/6755018864.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/lebekebibolunugaxojemada.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/87159979820.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/18337154071.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/colour_mixing_chart_for_acrylic_paint.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/does_magic_mouse_2_work_with_yosemite.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/bexidarumopolu.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/atmos_vape_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/compare_and_contrast_essay_topics_for_2nd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/monster_illuminessence_led_strip_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/25790033556.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_off0000f903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF903 5764 bytes
SHA-256: 4ca3051e358352377fa4c13bb7541cb0c080873bd77aeb0174150ee26e169a69
font_01_sfnt_off00010c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C86 11116 bytes
SHA-256: 5d7c54560e9295705531560a9deb8dd7e0cc39ad10491a380b952ccac4515875
font_02_sfnt_off0001323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230