Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb6e1d5379a8511…

MALICIOUS

PDF

69.4 KB Created: 2021-04-02 00:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94fd21ece1b8d6c9094c921b24cbdf21 SHA-1: b8bfb19106bc5f977fa4d5d604301ebe5c1fc64e SHA-256: abb6e1d5379a8511fe3bcf3de4c3861b3b2c51a2af49b5ec6d058f89b060fada
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. The document contains a large number of external links, forming a link farm designed to direct users to potentially malicious websites. The primary lure appears to be related to "The Giver" book chapters, suggesting a targeted phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/aws?utm_term=the+giver+chapter+6-10+questions
    • https://cdn-cms.f-static.net/uploads/4372355/normal_603345cab744f.pdf
    • http://pasipodo.mypressonline.com/spartiti_canzoni_classiche_napoletane.pdf
    • https://cdn-cms.f-static.net/uploads/4492580/normal_6035b42e750e2.pdf
    • http://libutulidux.medianewsonline.com/traducir_documento_de_aleman_a_espaol.pdf
    • http://fijexojor.getenjoyment.net/pimuwevemeratomezas.pdf
    • https://cdn.sqhk.co/lijuwezasip/kibhghf/stick_run_hack_access_token.pdf
    • https://cdn.sqhk.co/zidexamuwela/hhCgemK/cersei_lannister_last_words.pdf
    • https://cdn-cms.f-static.net/uploads/4374521/normal_6061cd673ebe2.pdf
    • https://cdn-cms.f-static.net/uploads/4470028/normal_60409d3ec51b8.pdf
    • http://smartline58.ru/clasificaciones_de_cuentas_de_contabilidado8ykz.pdf
    • https://cdn.sqhk.co/xamitarerivu/csgiIjd/wenevutogaxebejiwub.pdf
    • http://lnstagramcopyrigtservice.com/buddha_amritwani_marathi_video_songyjib9.pdf
    • https://cdn-cms.f-static.net/uploads/4462350/normal_60373cb426a41.pdf
    • https://static.s123-cdn-static.com/uploads/4373511/normal_5ff5959f439dd.pdf
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5fdc2bdf99d64.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_5d9e7957f01045d9a1d351e774f6be05.pdf?index=true
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_645f43626ba740b581b73ad18071a2f4.pdf?index=true
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_c1041951e9c34b2b9639703d8ec11dc9.pdf?index=true
    • https://cc968bdf-8a18-4a65-a72d-893c706ef441.filesusr.com/ugd/bae363_7013f4a8713646b4a99f77211909e5de.pdf?index=true
    • https://a804c8a8-fdf7-4fba-b19b-c23aecc29597.filesusr.com/ugd/a7074a_e1b00fa45e124751b06bf6a8ec7387ec.pdf?index=true
    • 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_off0000d260.bin
22c0dad80f941388b11ba107b9f257113ff331c03fdf9f670ad61d80426ab3a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD260 5676 bytes
font_01_sfnt_off0000e5c1.bin
79c74559580b994da7a02c0d4f3b8b418a7e2f344a26ebeffc70e6f8b51758cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C1 10144 bytes

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