Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a28c9111d0f28a…

MALICIOUS

PDF

66.8 KB Created: 2020-10-06 18:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4d7173412cea1522a57b61268f35d102 SHA-1: 30b3be34d5dde83903e183d4450356aea206a17c SHA-256: c0a28c9111d0f28a0bbca1f9bb04c8a095012c0b97b9812aace03992afe6bb1b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to distribute malware or lead to phishing sites. It also hosts a large number of external PDF links, many pointing to Shopify, suggesting an attempt at SEO poisoning or a link farm to obscure malicious activity. The ML classifier also 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://ggtraff.ru/strik?keyword=witr+namaz+ka+tareeqa+in+urdu In PDF document text
    • http://sumewo.independentit.net/uploads/1/3/0/7/130739629/xenabexegusired_sisoz_vupoledu_divazi.pdfIn PDF document text
    • http://files.mengkayeducation.com/uploads/1/3/0/7/130739351/nuxudokixoz-vabinazunano.pdfIn PDF document text
    • http://fisuv.msualphas.com/uploads/1/3/1/3/131398455/befezeza.pdfIn PDF document text
    • http://files.johngaylord.com/uploads/1/3/1/4/131453221/689381.pdfIn PDF document text
    • http://files.thephoenixspeaks.com/uploads/1/3/1/4/131437845/dogose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/six_guns_gang_showdown_apk__obb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/63401097420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/vojupasibixukuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0652/0219/files/55912356774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/92167166135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7913079-8594-4144-95b1-1e3324f6b95f/bukimojodubikosetux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65fb1d8c-524c-4ca5-a6ef-a11a57039c01/74223928861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d0b6aee-5a38-462b-925d-4f9b1e7439f5/berubuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c941f10-e945-4842-a852-e6b58e980ddf/duteragut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c621fdcb-c868-4998-b756-29e4d40729f6/65199946527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/how_old_do_you_have_to_be_to_work_at_starbucks_in_ohio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/swtor_leveling_guide_1-65.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000c2c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC2C0 25024 bytes
SHA-256: e5da5148ae61f1b02e1ce9081c77cedc3891cf6d960e7a1e20d6fa583cf30886
font_00_sfnt_off00008096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8096 5012 bytes
SHA-256: 1cce0a29592d49c8116adfcdf2b98beab3478d0cc09157ce6bca0621513f8ff3
font_01_sfnt_off000091a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A2 15864 bytes
SHA-256: 72f1796708ee0fc85a7a575305b24aa5194ccc904d7cd40be62911f01cfe38b1
font_03_sfnt_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 3048 bytes
SHA-256: 3ef1f190f8d6128e78df28d0e615d7548ce49341e3414c1b5776a9a622e0c613

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