Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ff56913b82190b…

MALICIOUS

PDF

72.9 KB Created: 2021-03-06 10:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ff31ae0480648055a90babce16c631ac SHA-1: e691d1577f943c26fbc11fe5402af74b1917643f SHA-256: b6ff56913b82190b1f516add03ac9dcdce890011796ed1e435bb32167aa6779f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://leonvi.ru/wix?keyword=unit+3+worksheet+3+quantitative+energy+problems+part+2+answers PDF link annotation
    • https://verikadofaja.weebly.com/uploads/1/3/2/3/132303102/gasezobajoxezezukar.pdfIn PDF document text
    • http://banolapisa.iblogger.org/65341036592.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/hdFBhea/69808244462.pdfIn PDF document text
    • http://gojifoxedot.iblogger.org/can_infant_optics_baby_monitor_be_hacked.pdfIn PDF document text
    • https://lalotuzeguraja.weebly.com/uploads/1/3/1/3/131383936/xiwifoxiforebavem.pdfIn PDF document text
    • https://gikesusemu.weebly.com/uploads/1/3/4/7/134775173/2649918.pdfIn PDF document text
    • http://ganoroke.iblogger.org/6762459142.pdfIn PDF document text
    • https://cdn.sqhk.co/pekuwalixeso/iecO5V5/mexawobigemowujekevudizot.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/ntihcid/fadinuvo.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/nilagowe.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/5igihjb/no_dice_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/jxlifha/online_games_to_play_with_friends_on_mobile.pdfIn PDF document text
    • http://ouily.xyz/definition_of_economic_sustainabilityola2k.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/3d_sky_model_freee0m8x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://norevejuvo.epizy.com/meworolisupetabakizupazef.pdfIn PDF document text
    • http://kedukalof.epizy.com/free_coding_courses_for_beginners.pdfIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_04820fa9ba5c4ce484d958b5f5532ed7.pdf?index=trueIn PDF document text
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_d70f42a1b92c4024a3219c7c5a92ae07.pdf?index=trueIn PDF document text
    • http://kewumexor.epizy.com/conversor_medidas_de_pulgadas_a_centimetros.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_off0000dcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD7 6104 bytes
SHA-256: 7173e691bc78c010007fbd8da13727c74881484e426c3a1d5caed6cabfb17981
font_01_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 10544 bytes
SHA-256: e5260cad8822450eff6b030edcff80314a16aa03e05c6c66db01fe4a7dd037f3

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