Malicious PDF — malware analysis report

Static analysis result for SHA-256 67576fe68b3dad7a…

MALICIOUS

PDF

128.5 KB Created: 2021-03-13 19:26:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0f7f8ca4d206872b8c4d1474b3863990 SHA-1: f3a0862185e59886ee8d91469ef4434dcac8ee12 SHA-256: 67576fe68b3dad7a52d00bde771d71cf622e53622c58858b2bad98699a340571
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary external URL, 'https://baarspo.ru/award?keyword=agile+software+development+with+scrum+schwaber+pdf', is likely part of a phishing lure to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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://baarspo.ru/award?keyword=agile+software+development+with+scrum+schwaber+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416798/normal_603fdffb7f2d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428078/normal_5fe0511ee0816.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/Uqid1Tf/super_adventure_pals_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470019/normal_601e50f55030a.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/tcgg4ij/47861131276.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/jhO3Kzt/ares_virus_game_mod_apk.pdfIn PDF document text
    • http://pro-konditer.com/easy_piano_christmas_sheet_music1tp89.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/idjhhyW/64324716161.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/3025917545125tes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407331/normal_6017d06c8c6c7.pdfIn PDF document text
    • http://subbellassecret.com/niv_life_application_study_bible_third_edition_leathersoft_gray_pink_red_letter8khvn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409236/normal_603c3283bafe1.pdfIn PDF document text
    • https://cdn.sqhk.co/naluloli/Fic9ien/17576070489.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/917efe83-8aef-4370-b1e3-49ff4921bb23/lifujodatabosozazazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aef5540-84c1-453b-a747-9da176511b0c/elder_scrolls_online_breton_mage_build.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f763d10-5e01-493a-b18b-00954fcae49f/how_to_prepare_for_12th_board_exam_commerce_in_2_months.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea086a32-63a8-44df-978d-b4293ccc57ac/15351434646.pdfIn PDF document text
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_b4962c22ca1d4ed488116f06809f3006.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d803013-597a-4b89-938a-1d83b3a5b0ae/mulesa.pdfIn PDF document text
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_43df3baeb6df4f4393ea774d1d3168fd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f63774e-264e-4739-b71c-900e965e6010/math_tricks_in_hindi_10th_class.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5341d6-e521-4b86-932d-268a81b787d4/graham_hancock_bbc_documentary.pdfIn PDF document text
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_7803955b802a4f7592418584bfdc4849.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb826e63-9727-48ca-b6aa-48c04cab9c48/jamman_express_xt_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bc31031-b85e-43b8-8d41-ebb61c98b2d5/icd_11_codes_download_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f3868d0-592b-4c14-8be3-c4fb33f1cb37/hp_laserjet_400_m401n_jam_in_cartridge_area.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_off0001a7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7B2 5732 bytes
SHA-256: 285400e3db6d0188a01e46f98d86450da965b12a0eabada62b33287a8b3fac5f
font_01_sfnt_off0001bb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB11 14584 bytes
SHA-256: 07c3900d96fecd9fabd7e296d04a8f246c93709104b2793245ba65f70f979285
font_02_sfnt_off0001e54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E54C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176