Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b51086457c78c6f…

MALICIOUS

PDF

46.4 KB Created: 2020-10-25 06:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: be1f7dd4375e74992058be1f359a4d60 SHA-1: e70c748c745e0d6f1739f2cddb99b96ee0891098 SHA-256: 5b51086457c78c6f9282c2d93e51ecd727ced340c6f628eea9b8981ad974d940
154 Risk Score

Malware Insights

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

The PDF contains a lure related to 'computer games for android download' and embeds multiple links, including one pointing to known malicious redirector infrastructure. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm designed to distribute malware or phish users. No scripts were extracted, but the embedded links are the primary attack vector.

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://ttraff.link/pify?keyword=computer+games+for+android+download In PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/faxenisurasasu-narotonibal.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/ginepoloduxeronew.pdfIn PDF document text
    • https://sivivaleretuvu.weebly.com/uploads/1/3/4/3/134324596/fipobux.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/dazepa.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/bopej.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/9035966a-ecca-4b6a-a638-991bf7929925/16206075206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba307702-b592-4f24-b923-0736f698ee12/tvytelenovelas_2010_escalona_capitul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9556/5499/files/zotigevebukibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9285/9798/files/59922292736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2951/8277/files/nespresso_pixie_clips_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/identidades_trigonometricas_formulario_calculo_integral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7425/1671/files/best_boredom_buster_games_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/14284080120.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/tiwuwobifujuvunenu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/jipovodika.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/buying_a_house_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6907/9193/files/44629694750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9470/2763/files/satisfaccin_laboral_definicion.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_off000069ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69ED 5356 bytes
SHA-256: afbc86d2743a471a22831cfaa5034eed33dcb5085ad353420e117973638fa725
font_01_sfnt_off00007c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C20 9928 bytes
SHA-256: 02863156361ddcd49fd63ac386cf11c27517b06b105579eacb9150fba0c951fb
font_02_sfnt_off00009de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.