Malicious PDF — malware analysis report

Static analysis result for SHA-256 68949529485ddf14…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 23:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 91f4a4ba2c27bcfa6c0d35b42e934e4b SHA-1: 601ea3414f86219d0d0e38c17a85903adafc9e7c SHA-256: 68949529485ddf14082aef5f693a460a46552b2cfd21cd2bccfa83d3a5a6a968
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many of which point to disposable domains and are associated with link farms, suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=gta+fast+and+furious++apunkagames PDF link annotation
    • http://relodifalixogo.scienceontheweb.net/the_story_of_channon_rose_part_ii.pdfIn PDF document text
    • http://fasad-dom.site/42676864671icwvk.pdfIn PDF document text
    • https://sanituwinera.weebly.com/uploads/1/3/1/3/131379206/dizivut.pdfIn PDF document text
    • http://ergors.space/the_scorpion_king_full_movie_in_hindi_download_1080pxewrl.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/b10a3b5eb6093bc.pdfIn PDF document text
    • http://grenkasalo4.xyz/lean_startup_business_plan_templatejn0ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_60386fd31c74e.pdfIn PDF document text
    • http://kukushpa.fun/86068126676f3u62.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/63409091303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_5fe7c1945f156.pdfIn PDF document text
    • http://idealicacolumbia.site/firububeturexuzasegajo9kst9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380694/normal_5fd9658fad5aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384296/normal_602edb7fd7a38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388177/normal_602dd27457bb0.pdfIn PDF document text
    • https://minunelojob.weebly.com/uploads/1/3/1/4/131453060/xemubumulan_rarinaj_gasuwawesude.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/74d159af-1a5c-48b8-8864-59f5784d0a1c/elements_and_principles_of_design_matrix_worksheet_answers.pdfIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_24871d3eb1014c7b9547fe0acbbddfbc.pdf?index=trueIn PDF document text
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_711067b83d3e419bb75f64edbe413772.pdf?index=trueIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/favanodusarirupev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f63adc25-0ec9-4ed0-a2f4-3911c0de5db1/how_to_take_professional_pictures_with_iphone.pdfIn PDF document text
    • http://junaken.onlinewebshop.net/parent_plus_master_promissory_note.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/remington_pole_saw_repair_parts.pdfIn PDF document text
    • https://5563968e-3cf5-463b-8312-7915ab8a4794.filesusr.com/ugd/cd90d1_133b32d1bbe04979b10bc7cc5c94a392.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/33124832-8823-457b-8567-fb5f488148ce/80808966171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e5741f-3cc8-45e2-96d7-4083a23eb265/jam_hang_up_portable_bluetooth_speaker_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e28c120-4988-4621-9171-e3a41928cbc7/sennheiser_170_vs_175.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED09 5424 bytes
SHA-256: 817cafeb98effa6dd9429cce1f26536bdb4bbd0f5b5a62555a1b6d828b29b494
font_01_sfnt_off0000ff75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF75 11464 bytes
SHA-256: 8792876ab3ef53019ae23933a67fee811b47b81a8309cadafa19109ff120a051

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