Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62351c87005696f…

MALICIOUS

PDF

59.2 KB Created: 2020-10-01 23:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 15043e3e6a769e2430c91d8aae9f03f7 SHA-1: 387a44034ca351e22a042743a55d6109383a73ba SHA-256: a62351c87005696f02e589fffc36417b426c3f86fbb8f56b0d486f51ffee1a26
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs and text suggesting it is a price list, but the primary URL points to a known malicious redirector. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect the user to malicious infrastructure, likely for phishing or further malware delivery.

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://gettraff.ru/strik?keyword=hindustan+unilever+products+price+list+in+pdf In PDF document text
    • http://nagomedix.alisonjepsonoboe.com/uploads/1/3/0/7/130739456/tepixevumofal-lapamito-momele-fuzogug.pdfIn PDF document text
    • http://files.paulsonproductions.com/uploads/1/3/0/7/130740128/6574175.pdfIn PDF document text
    • http://files.stjohnsdunellen.org/uploads/1/3/1/6/131606046/ee04d81830cd9a.pdfIn PDF document text
    • http://gedipa.scienceatthelocal.org/uploads/1/3/2/7/132740829/tisatelega.pdfIn PDF document text
    • https://site-1038768.mozfiles.com/files/1038768/nalodamanuguruv.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/pukikuxezovusivimireru.pdfIn PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/bowululusagoponegoxati.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://cdn.shopify.com/s/files/1/0482/9646/0443/files/rhode_island_courts_opening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/block_lettering_font_in_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/50551186396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6450/6006/files/xumabekapojawares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4835/3442/files/kenmore_heavy_duty_60_series_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7b0bdb6-2599-45ba-94cf-7aa81ba73986/mobolarimaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcaa7e38-9677-46ad-a33d-dad34b3db24b/dugekawifebajorimowuzes.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8485 5052 bytes
SHA-256: 35a018d84e5428405044cc1cfd2326cbe64854c40d59940349d5f9992a71d759
font_01_sfnt_off000095b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 11244 bytes
SHA-256: 3422ae5862744f196e7dd7432f442aefdea2c79715f8861da95b103737753d10
font_02_sfnt_off0000bc15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC15 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
font_03_sfnt_off0000d12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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