Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6201e41ae547ab3…

MALICIOUS

PDF

72.8 KB Created: 2021-03-08 05:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 103772aae5f08c08e158fba289909a61 SHA-1: fb9d783a3a7b4fb768251476b84ea2f7537b4338 SHA-256: d6201e41ae547ab3c7f7126112a83c4ec5990e74beab4a9ee29dc9d4f117372d
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to disposable hosting and redirectors, indicating a phishing or scam attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirector pattern, likely aiming to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=sentences+fragments+and+run+ons+worksheet+4th+grade In PDF document text
    • http://mobeditobaxul.scienceontheweb.net/how_to_turn_on_apple_wireless_keyboard_2011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_600d3b3bdff79.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/what_are_the_requirements_to_become_a_real_estate_agent_in_victoria.pdfIn PDF document text
    • https://bimomudunaxa.weebly.com/uploads/1/3/4/7/134757379/74d85dba457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469350/normal_600f977a8a83d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473415/normal_5fe4dc0ccd3b0.pdfIn PDF document text
    • http://wonder-ita.fun/53212093730z0rhc.pdfIn PDF document text
    • https://virutabadipepuv.weebly.com/uploads/1/3/1/3/131398083/gawazab-jeviwikogezoxet-xuviwuminif-divozo.pdfIn PDF document text
    • http://magnitoli-2ekran.site/94170593564sqqt2.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/JPJUie0/best_heroes_of_might_and_magic_3_scenarios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489409/normal_5fc61e696b5be.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/jaghgif/fixelivevubusupawizusu.pdfIn PDF document text
    • https://cdn.sqhk.co/didowaba/jehiJk3/homeschooling_programs_in_illinois.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/tgegf89/96401792427.pdfIn PDF document text
    • http://wersita.fun/twilight_saga_cast_net_worthic1a6.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/71573622160.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414486/normal_5ff47af63e29e.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/tedomozovekar.pdfIn PDF document text
    • https://cdn.sqhk.co/tatomaxeriri/mjbhdje/36064261729.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
    • http://madukavinoxonal.epizy.com/what_is_the_best_hoover_windtunnel_vacuum.pdfIn PDF document text
    • http://rirukezuruxemuk.epizy.com/geziw.pdfIn PDF document text
    • http://vasakuzepilaxi.onlinewebshop.net/what_is_the_ending_of_a_streetcar_named_desire.pdfIn PDF document text
    • http://laroruteze.epizy.com/fishing_rod_for_big_catfish.pdfIn PDF document text
    • http://degejukifukux.epizy.com/dickey_john_radar_iii_datasheet.pdfIn PDF document text
    • http://vamagirizotaro.rf.gd/shutter_island_2_movie.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_off0000d20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20A 5584 bytes
SHA-256: e1d76f846aea7e556a06964b1882ecf28386fa6e9dcf3096e4170490d9103c2f
font_01_sfnt_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 9976 bytes
SHA-256: e1100899978845d3bf7dd7ff17e4f9226d9654f11382a2a1d78a4974231e1518
font_02_sfnt_off000106f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361