Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b63a054a5be71f…

MALICIOUS

PDF

85.8 KB Created: 2021-03-18 08:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9e0049af7a44170e5462cc6d4a3b8f63 SHA-1: 2356d7cdb45351c8bac1edd9751005a33bfc51b5 SHA-256: 07b63a054a5be71f8947d807b645ca5174c37edd26cb782c7ca63da36b89710b
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many pointing to disposable hosting and utilizing UTM parameters, which is characteristic of link farms or phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the presence of numerous external URLs suggests the document's primary purpose is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/strik?utm_term=onkyo+ht-s5800+price PDF link annotation
    • http://itclick.pro/162358219544s2tp.pdfIn PDF document text
    • http://theplafond.xyz/tazaritid3h0j4.pdfIn PDF document text
    • http://modernstyle.pro/puxukugazafabedixm3pu9.pdfIn PDF document text
    • http://mattelipsticks.site/the_secret_movie_2020_netflixy70on.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
    • https://uploads.strikinglycdn.com/files/eccab217-aeab-4273-b1fb-d3fac193a45d/new_the_monkey_king_1_full_action_movie_in_hindi_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d73d34-7745-4dd0-834e-695c235917b0/rogepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce662efe-b238-4e2e-ab2e-1703e5ee3ade/maths_textbook_class_12_ncert.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a715ee92-4832-49f4-8615-5955680d7351/mokutixurikufoduju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af13a13-2b43-4aba-a5f2-c7844611f2ff/crossing_to_the_other_side_sermon.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_232c83ba3e584607838d51f8d88a376c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejobu/malekeworavoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94e9d4cc-7b04-4330-9c25-2c6050c6b2d3/3_beep_bios_code.pdfIn PDF document text
    • https://44eeb0f0-4dc9-4d8b-b3fd-cc7ace98e90e.filesusr.com/ugd/a083a1_309408247cd14ee8a43a93a237ce0ffc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/df8a9493-13cf-46b6-b0e2-7bc7f2d53cb1/1507861062.pdfIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_031ca94edc2a4481a341a3ae938d3f2c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jigezilor/91356559002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2595cd06-b255-46be-83ff-200a8c4c8b3c/sisefekodomit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3123e0-97f9-4824-8a9a-7031273cdecc/69989588427.pdfIn PDF document text
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_08100f726a664c69bc00a6e3127d797c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/8133912301.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/used_howard_miller_grandfather_clock_value.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/western_digital_my_cloud_home_duo_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/425f2b62-1b83-482b-8a6d-f450c0b45272/friedrich_nietzsche_books_in_urdu.pdfIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_3ff430a148d04eb2851f8e6915e8262e.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001028b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028B 5252 bytes
SHA-256: f6723315af6e97236e17b9639afbc9fc4cbfa5d457d9d63385b8d6837badc1c4
font_01_sfnt_off0001146b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146B 11460 bytes
SHA-256: 90f59f9f5414a529454b5862fab17cd653a6b0e0f22d95623b403027d4235504
font_02_sfnt_off00013b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B79 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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