Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d3bd0f9a1be3d7…

MALICIOUS

PDF

71.9 KB Created: 2021-03-19 20:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2429dc8bac2e408cee9228335b62c37e SHA-1: e95e579c1482cbb0d6d576080656ea5d1435206c SHA-256: 43d3bd0f9a1be3d76ce280ddd23f16a62673f2822e7325d053ebd2997d7228bf
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though partially corrupted, contains a lure related to 'Janapada songs in telugu free 2015' and metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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/123?utm_term=janapada+songs+in+telugu+free++2015 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489839/normal_6000bc4978596.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370768/normal_5fff360a58f19.pdfIn PDF document text
    • https://cdn.sqhk.co/teforoke/jggigjM/screen_time_control_app_for_adults.pdfIn PDF document text
    • https://gufonalika.weebly.com/uploads/1/3/4/0/134096228/vidarozidazogul.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/DgzgcIW/online_games_with_friends_free_no_download.pdfIn PDF document text
    • http://vatitafi.22web.org/autocad_2010_32_bit_free.pdfIn PDF document text
    • https://lusimijibujadex.weebly.com/uploads/1/3/4/6/134677052/sixusujunam-delaji.pdfIn PDF document text
    • https://vigobekopu.weebly.com/uploads/1/3/2/3/132302998/522ac52b62eb535.pdfIn PDF document text
    • https://famipitep.weebly.com/uploads/1/3/4/3/134355151/wixinedefolozo-motevebelowa-rovumifejip.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/if1jesH/alaska_iphone_wallpaper_hd_1920x1080.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/rotapewufuwovi_jusaj.pdfIn PDF document text
    • https://zaroralovez.weebly.com/uploads/1/3/0/8/130814195/fuwoxom.pdfIn PDF document text
    • https://vunivejo.weebly.com/uploads/1/3/4/2/134266425/banutisojawib_xeret_tobamevosure.pdfIn PDF document text
    • https://pasezoxe.weebly.com/uploads/1/3/5/3/135347718/texobutadujip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzazodigeza.epizy.com/social_media_plan_template_for_events.pdfIn PDF document text
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_c5db8e32d2e44cc4a31f554ce95e24e4.pdf?index=trueIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_69468600dd1b4e839ad0964a22eac4f8.pdf?index=trueIn PDF document text
    • http://jufosuliz.epizy.com/xelosakuli.pdfIn PDF document text
    • http://megozesupulop.rf.gd/daxaxosujebogokoj.pdfIn PDF document text
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_8caaf2b3153a4b92aae28306134f7602.pdf?index=trueIn PDF document text
    • https://9049409e-dcbb-43fe-b7cb-0f7a5d042cf1.filesusr.com/ugd/e59eee_4d4b3531afef4224a80080e51f9ced7f.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97D 5648 bytes
SHA-256: 3e52a6726163fdbfebda9dc23e0de949c48438050b46fa036418894cb6489c65
font_01_sfnt_off0000ecd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 10464 bytes
SHA-256: 48c2aeb25b47b22ee0e4006f0d14f16be1b77672bb37822e8ef35b112ffb16dc