Malicious PDF — malware analysis report

Static analysis result for SHA-256 a300bb8b2fc3b735…

MALICIOUS

PDF

43.5 KB Created: 2020-10-11 23:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d8516431f9dbd1ee75aee7f3e99eb817 SHA-1: 675b31ebf704415668948d917d82bf8665b5d2ca SHA-256: a300bb8b2fc3b735d32bd3fab49d4bcd0a35ec79fffcacbb604630ee1824a5ce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, 15 of which point to PDF files hosted on Shopify. One of these links, however, directs to a known malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to lead users to 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=test+de+inteligencia+emocional+golem In PDF document text
    • http://files.williamsanmartin.com/uploads/1/3/1/3/131380208/lobefod-xovojuloduf.pdfIn PDF document text
    • http://suwodo.proofmypaper.net/uploads/1/3/0/7/130776433/82e3bc942.pdfIn PDF document text
    • http://files.goldenorchidphotography.org/uploads/1/3/2/6/132682254/4012603.pdfIn PDF document text
    • http://godugo.7oakseventgarden.com/uploads/1/3/2/6/132681946/ripizaleximotav.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/1/0430/2857/8467/files/providence_the_profaned_goddess_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3881/3589/files/likarozeluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2548/8791/files/harley_harmon_elementary_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/danos_seor_un_corazon_de_fuego_acordes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/directions_to_newark_airport_economy_parking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2453/0594/files/polajuvopigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/81507737510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0118/5957/files/68006597295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1896/3109/files/zilezipebaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/workkeys_test_results.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/disiluwukexe.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_off00006960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6960 5112 bytes
SHA-256: d9f3aa0e043e95016e5901d8dc915587b9d52658adc958395571f60ef21efa9d
font_01_sfnt_off00007aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAC 11072 bytes
SHA-256: 18fe8b9186d9d8569495c5cb35e84914c5ca287f52cdbe3eb21ae48849fb0775

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