Malicious PDF — malware analysis report

Static analysis result for SHA-256 340659e400e7cd4f…

MALICIOUS

PDF

70.9 KB Created: 2021-03-18 07:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 67611a0502db90a13bba4f47d833ce3e SHA-1: ca3eb4f10d26c4d8f97c94a1cb9c438167eb6f3e SHA-256: 340659e400e7cd4f91c71525c994884ce59496c8ea6e1eaa4d96c853a33a6a65
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of a 'download button' lure further supports a phishing or malware distribution scenario.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=star+trek+ringtones+for+iphone+free PDF link annotation
    • https://wosapinilesodiw.weebly.com/uploads/1/3/5/3/135347506/c71fe4.pdfIn PDF document text
    • http://ig-soft-team.com/software_functional_requirements_specification_template3wniq.pdfIn PDF document text
    • http://joblanc.xyz/nunubujusigegort54.pdfIn PDF document text
    • https://tolafapod.weebly.com/uploads/1/3/4/4/134486806/a8d09a1.pdfIn PDF document text
    • http://biotringel.shop/making_cuts_with_a_reflux_still33rkd.pdfIn PDF document text
    • http://zagejudivavi.sportsontheweb.net/porter_cable_150_psi_air_compressor_drain_valve.pdfIn PDF document text
    • https://pudajimerexinag.weebly.com/uploads/1/3/4/8/134896131/fewosusatusoxema.pdfIn PDF document text
    • http://kaboliwup.mypressonline.com/99060676878.pdfIn PDF document text
    • https://dorafidugazeler.weebly.com/uploads/1/3/4/3/134331460/meravovusageril_javavojegi_mazopalami_nisovaraginunor.pdfIn PDF document text
    • http://pikejofopon.mypressonline.com/pujusozenofoposoneze.pdfIn PDF document text
    • https://zalinojawovuga.weebly.com/uploads/1/3/4/8/134886974/liwurefugalejo-tetuzebupejena-dezozanojar-fosapeni.pdfIn PDF document text
    • http://megantv.site/how_much_do_detectives_get_paid_per_yearaafmh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e1cd7dcf-8988-4be8-9b1a-722367337987.filesusr.com/ugd/6203b9_b58cbb5225ae4d38a8dc08457b9e02db.pdf?index=trueIn PDF document text
    • http://jomopizemiz.onlinewebshop.net/tatupazatanapawezarakas.pdfIn PDF document text
    • https://44034db3-6cdd-4729-adf3-7ccd6afcf354.filesusr.com/ugd/9fe9cc_5735c2d6334642449727d2df202ae68c.pdf?index=trueIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_bc6985bcad5a4d67b80a7dd75b2e64a0.pdf?index=trueIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/how_to_use_canon_powershot_sx620_hs.pdfIn PDF document text
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_7be62cfb784344d5a827dde11d39fde3.pdf?index=trueIn PDF document text
    • https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_64e3966dce404699b60678afffdd91ad.pdf?index=trueIn PDF document text
    • https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_b5acc491efbc4b66be9ef7342ac8f152.pdf?index=trueIn PDF document text
    • http://xezaretidatoro.onlinewebshop.net/algebra_lineal_schaum_gratis.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/how_to_lose_belly_fat_smoothies.pdfIn PDF document text
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_2679cfa166f5477bac2a55beb9eb419b.pdf?index=trueIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/what_does_waldo_mean.pdfIn PDF document text
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_ee4df6071b8544ce96a5eb529014d8d8.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_off0000d7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B0 5300 bytes
SHA-256: daf86336c547c7834df9b2b5e2f863f7a180d69315e23d7584ab965908dc8094
font_01_sfnt_off0000e9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B6 10604 bytes
SHA-256: 6302bc7b3f97fbef9e72c36870e9bb0a922087fc0f59ad84da68925b46911e2d