Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f89d2c36f67c83d…

MALICIOUS

PDF

77.5 KB Created: 2021-03-19 09:49:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19f3591b5efd7899c0d92644fb3e6828 SHA-1: 109033e84857deaf626ed226df36639077d1b274 SHA-256: 6f89d2c36f67c83d4f40713a22c86dd947dfdddbbc94c79e84e348f211245198
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting a link farm or redirection mechanism. The primary malicious URL identified is https://zajinet.ru/award?keyword=psychological+barriers+of+communication+pdf, which likely serves as a lure to a malicious site or for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/award?keyword=psychological+barriers+of+communication+pdf
    • http://dusamoka.mywebcommunity.org/zelifuzom.pdf
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/c5cf1ed66933f.pdf
    • https://kumekebiwoxig.weebly.com/uploads/1/3/0/7/130739238/adc1f2e8.pdf
    • http://mufinofol.scienceontheweb.net/1886434187.pdf
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/b64d51eec9908.pdf
    • https://gitojigobireko.weebly.com/uploads/1/3/4/5/134517815/jelidon.pdf
    • https://vigajinid.weebly.com/uploads/1/3/4/8/134889024/fajup.pdf
    • http://deladinabixek.sportsontheweb.net/5643911162.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_f2f5850e14cf47c7ab233202608fc1be.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0258a88e-b91c-450a-8a31-ffec6de1693a/blood_bowl_2_shop_codes.pdf
    • http://zorijefugixor.atwebpages.com/princess_diaries_2_cast_members.pdf
    • https://uploads.strikinglycdn.com/files/a0df5c4e-5c60-4742-94ea-685a17df33f3/moniju.pdf
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_a4e264fa5e3140efa2ac7e9e50fda5dc.pdf?index=true
    • https://ef9d90ca-5811-4a1c-810e-75bcfae60121.filesusr.com/ugd/a33af7_eb9a16580f284db4b53f9df94471e688.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2d6ed134-2e04-4132-b81a-a97393bd34e0/how_to_thread_an_older_sears_kenmore_sewing_machine.pdf
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_896499666a1a44278cd213e9559ebab8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4e265e59-1a72-4ff8-a7aa-827b2fa767a8/el_lazarillo_de_tormes_resumen_draw_my_life.pdf
    • https://8aefc570-8454-48c3-bb63-d4d1067b7ce0.filesusr.com/ugd/5c9621_a72f9ecfb7b142839b21af71a307eafb.pdf?index=true
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_1222db30b2944603a2c2e0c6fabb8ec4.pdf?index=true
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_573d7f4cad0649d6ac1e510d2505455d.pdf?index=true
    • https://1682489e-d94b-4f22-b6a6-c8ecb623ca2e.filesusr.com/ugd/5f226e_191654553a2e4924bdf40aa02296ceb7.pdf?index=true
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_9282f8208efb4bc4ba1386eeab459b65.pdf?index=true
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_027be3e413c8400f9f3e9afbf33e4083.pdf?index=true
    • https://42e65457-ec34-4553-8979-78b6e302f774.filesusr.com/ugd/f1976d_776a4451750740d989dd53be84a74a40.pdf?index=true
    • https://uploads.strikinglycdn.com/files/358b34a5-c4c2-4ca9-85ef-73b219472a22/53234705539.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2a4.bin
050a50ce86ca4f19f7382239dec7b53624b49d675729b23dca257ecef8eae322		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A4 5812 bytes
font_01_sfnt_off00010646.bin
d80031e1043673382609d91f6dbf3245cd6ed7d09ca62bbf4111e1f936b24019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10646 9948 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.