Malicious PDF — malware analysis report

Static analysis result for SHA-256 071aaf0e31d605cc…

MALICIOUS

PDF

38.2 KB Created: 2020-11-05 21:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f50ea8aebedbbf448b687a6f23b4b38e SHA-1: 9aaa7ccefc6c1e50a7ba1ba63933e85a300e0042 SHA-256: 071aaf0e31d605cc312a4240af1b9d72328ee5f6d34581544a5ca3cbaaacdc0d
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, likely to host a phishing page or malware. The document body text and embedded links suggest a lure to play a game, which is a common social engineering tactic. The presence of numerous external links indicates a link farm used for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=play+super+mario+world+unblocked
    • https://cdn-cms.f-static.net/uploads/4383561/normal_5f9920134435c.pdf
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/gipesi_pujivasa_kodezawesukovo.pdf
    • https://cdn-cms.f-static.net/uploads/4379046/normal_5f912f6dc003f.pdf
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/xiriruvumojupax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f38f0095-6f01-4db3-a46e-ef0a1d1ece91/bovajifa.pdf
    • https://uploads.strikinglycdn.com/files/72d1b65e-1fb7-4d96-964f-a038a5619a9c/wezizagegevakumagupipab.pdf
    • https://s3.amazonaws.com/luxelula/2204910453.pdf
    • https://uploads.strikinglycdn.com/files/0378554d-6b04-49b3-adf3-869376a967f6/mpi_monitor_422_burner_status_flashing.pdf
    • https://uploads.strikinglycdn.com/files/08ef26d8-8866-402f-82af-2700c4a09244/23598001481.pdf
    • https://s3.amazonaws.com/kisimujuk/pesticide_core_manual.pdf
    • https://s3.amazonaws.com/lodazojamuva/32987499738.pdf
    • https://s3.amazonaws.com/biwubeleba/total_rotational_kinetic_energy_equation.pdf
    • https://s3.amazonaws.com/pusori/journaux_algeriens_aujourd_hui_en.pdf
    • https://s3.amazonaws.com/temujonuwu/datasheet_7805.pdf
    • https://s3.amazonaws.com/lupuvogotog/business_card_design_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000499c.bin
e0bcd728e76614e9a20be0fbf1e57c2140434c7b5f0ec57cfd25283b8bd33d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x499C 5420 bytes
font_01_sfnt_off00005bfc.bin
e8c8430e761790893184f6a67cbceecb3999321011e45cf7b56c94b80e8bc059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFC 9864 bytes
font_02_sfnt_off00007dd0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 4324 bytes

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