Malicious PDF — malware analysis report

Static analysis result for SHA-256 009c770927bdad76…

MALICIOUS

PDF

51.5 KB Created: 2020-10-05 01:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7bc9c37b112effbe335898a5545a0c41 SHA-1: 740d12b64152ebc7b2674210498107b30e0293a6 SHA-256: 009c770927bdad7690816e1f1025c1ee2d81edac7be1a1e055ff14bb72657e61
154 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Garry's mod unblocked download' and the malicious URL. The PDF also contains a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation. The ML classifier strongly flagged this PDF as malicious.

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=garry%2527s+mod+unblocked+download In PDF document text
    • http://rawozeref.debbieyoung.co.uk/uploads/1/3/1/4/131406798/8193974.pdfIn PDF document text
    • http://majozorig.shackboldon.com/uploads/1/3/2/3/132302782/81011fda00db.pdfIn PDF document text
    • http://ganupob.intelekia-law.com/uploads/1/3/1/4/131411341/romed.pdfIn PDF document text
    • http://files.solarconsumeradvisor.com/uploads/1/3/0/9/130968933/8040831.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/9643/3818/files/56605849309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9256/8983/files/pirexanisofepaluputimus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/25061463599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01adc241-7eb7-4643-b7f7-2b88dd577286/wimovotufipedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8450/8055/files/paper_towns_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/little_tikes_shopping_cart_cozy_coupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5409/files/32989844802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0577/0904/files/rijipuxesafolatejoneraz.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_off000088aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AA 5548 bytes
SHA-256: 423b5a8affa4493f1c6bcd1e321f1fb0275845c89b86cdbc26ea629a26940d8e
font_01_sfnt_off00009b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9A 11468 bytes
SHA-256: 7a32c0220053dda9376aea0cd934fba33ca55a096cf735c01ee7bcd156d9fb10

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