Malicious PDF — malware analysis report

Static analysis result for SHA-256 892dea771d6855a3…

MALICIOUS

PDF

82.7 KB Created: 2021-04-12 13:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 359b85977b3af6fe69636f222439e35a SHA-1: c0f161bb2c65f2017f54a71e1396e0c491ae8d5b SHA-256: 892dea771d6855a3875a3f1c098f46c053afc263757a517cde7a89e8d2c7c3a5
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though partially corrupted, indicates a topic related to 'Beats Solo Pro pairing mode' which is likely a pretext to drive traffic to malicious sites. The presence of PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, along with numerous unknown reputation URLs, strongly indicates a phishing or spamming campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/strik?utm_term=how+to+put+beats+solo+pro+in+pairing+mode PDF link annotation
    • http://vvd.bar/12285611347l1zww.pdfIn PDF document text
    • http://ibkreactiva2020.com/2543116414345941.pdfIn PDF document text
    • https://vawudida.weebly.com/uploads/1/3/4/8/134890241/648144.pdfIn PDF document text
    • https://dizegeduwawab.weebly.com/uploads/1/3/4/3/134374994/04f80.pdfIn PDF document text
    • https://tumenunomowet.weebly.com/uploads/1/3/0/7/130775025/vomoseg.pdfIn PDF document text
    • http://tehnopolis.org/twin_comics_vip_apkvlqz7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407729/normal_5fcace216a993.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392664/normal_5fcce5f067633.pdfIn PDF document text
    • http://helpcreditscore.info/pomomitetusazugemojaguzook81y.pdfIn PDF document text
    • https://sofasiwo.weebly.com/uploads/1/3/4/3/134319993/3841953.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In 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/818fd47d-c78d-4f5a-a529-3f0a25ead558/60920152203.pdfIn PDF document text
    • https://12c9c681-cafc-4f88-93da-cb6f471fd49a.filesusr.com/ugd/f09a9d_4d2517b7c05a4b1480c7486dd5cbbc42.pdf?index=trueIn PDF document text
    • https://8ed7ad90-0d0e-491f-9c15-1f6cd5a61d18.filesusr.com/ugd/f1a804_2792288ffcce417498335a43d1c6bc48.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8edd1d2-a606-4899-95aa-dca622d0b6b8/powerxl_air_fryer_grill_cookbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cfd8fc-dd37-42c1-9876-442e523b0916/here_i_am_lord_mp3_song_download.pdfIn PDF document text
    • http://xonuxaxilajol.epizy.com/guillotine_cross_guide_iro.pdfIn PDF document text
    • http://migumirokive.epizy.com/rofugute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c627421c-b810-462d-bf40-f847c0e4bbb1/chinese_characters_to_pinyin_with_tone_marks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b47a902a-40e3-4299-ae37-f1938f18283c/4603990790.pdfIn PDF document text
    • https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_e4b61004caa24b6a8d52f1b368321c50.pdf?index=trueIn PDF document text
    • http://wuxiwojimi.rf.gd/how_to_set_up_voice_command_on_roku.pdfIn PDF document text
    • https://19a39513-20cc-49d1-a75c-e30ce0314142.filesusr.com/ugd/f99735_986ad2b595ab4e3083fc33ece12b72c4.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_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 6168 bytes
SHA-256: 50bd8db5ff9a0f03ea6ac0366ab4ff273dceb6ff0c6101ac0faff1fd52ccc92d
font_01_sfnt_off00010357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10357 5472 bytes
SHA-256: 52d543be1dacd90c459c3859e500ceb59348573c50037df744d571c0cc88556a
font_02_sfnt_off000115db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115DB 10828 bytes
SHA-256: 108797201ce3df633df86ba86b366d8245c5d2ab11b8022012af0434e96650c8

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