Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f22acb3117e08f8…

MALICIOUS

PDF

80.0 KB Created: 2021-04-12 04:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e9ca5b034aaaa1b7d7bd402bba229cdc SHA-1: c3fa4060f3d47ad50099621605dafce37c0ec0fc SHA-256: 1f22acb3117e08f858796fa7e66f60889502332143d654caff97c77e7de972fd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple external links, many pointing to disposable domains, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/strik?utm_term=cannot+see+wd+passport+my+computer PDF link annotation
    • http://pollsexpert.com/thompson_center_hawken_parts_for_salecnb71.pdfIn PDF document text
    • http://itdomen.fun/jurnal_pph_pasal_21f9tbr.pdfIn PDF document text
    • http://fojudesekuxujef.22web.org/sewewifanepozikob.pdfIn PDF document text
    • http://changepass.online/wazibulolegmmhv0.pdfIn PDF document text
    • http://copyright-infringement.business/grep_commands_in_unix17lrk.pdfIn PDF document text
    • https://tabugutiku.weebly.com/uploads/1/3/2/6/132682541/juvejutezakawuzumapi.pdfIn PDF document text
    • http://itwow.info/voces_de_pelicula_ferdinando_el_toroqytji.pdfIn PDF document text
    • http://pubggaming.online/bebatamozefegulezo0duvu.pdfIn PDF document text
    • https://lutaxebibutemun.weebly.com/uploads/1/3/1/3/131380730/8174723.pdfIn PDF document text
    • http://osmosiotzs.fun/best_family_board_game_ukxwum2.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/516153393122t0o6.pdfIn PDF document text
    • http://wide-do.top/jigovedamukobitotejuvi8yi0.pdfIn PDF document text
    • https://sotemupavunu.weebly.com/uploads/1/3/1/4/131413148/f87b3fda2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/194e7555-49b4-4365-9e4b-46d5948e8a16/27987553909.pdfIn PDF document text
    • http://kidopufopilute.epizy.com/vasugikilosujasuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c404fd0-7aa9-4f23-92ce-f328a34f205a/dell_790_sff_weight.pdfIn PDF document text
    • http://benepuru.epizy.com/jobukevumaxepobofezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/355f71ae-26bd-448b-af09-f3fe157d8259/how_to_treat_red_ant_bites_uk.pdfIn PDF document text
    • https://4dd4a32c-aced-41d2-87e6-7ff9ca8080d7.filesusr.com/ugd/6d6f33_c42a8ef7857e44d088effbd25b292010.pdf?index=trueIn PDF document text
    • https://0efdb04f-128a-4c0d-ace4-8b312723ebcc.filesusr.com/ugd/5508f4_7785cde427c84086ae1d0a559f2b0acb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD6 5288 bytes
SHA-256: b48d5ce6cac5aa850c1e4f803c8f863564392a81c91fa791bc59d4abd04b4ca0
font_01_sfnt_off00010dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCF 10772 bytes
SHA-256: b4e170cd4066fb13784e451dcafab8d26286012f718dc1cafda7fd43fcb32cc5

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