Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c9710cacafec78…

MALICIOUS

PDF

42.3 KB Created: 2020-10-30 04:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 520266eab1964fffab30b9c095b97cae SHA-1: 3641c6338f300098c04e544f5c8c1e725d1035bf SHA-256: 36c9710cacafec784ae0025577ff4f2fe75671bb94722355c411eea6b151b410
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, including a known malicious redirector. The primary malicious URL identified is https://gettraff.ru/strik?keyword=fashion+empire+cheats, which is likely used to direct users to further malicious content. The document's structure and content suggest it is part of a link farm or SEO poisoning scheme to drive traffic to malicious sites.

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=fashion+empire+cheats In PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/3977069.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/93049f265a0000.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/7db18b9465.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/23d5735bb9b07ec.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/1/0435/0607/3759/files/the_moron_test_online_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/71621871283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1429/7032/files/marantz_6300_turntable_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/school_teaching_experience_certificate_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7367/0820/files/mario_kart_ds_rom_espaol_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9326/9909/files/4840655638.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/19706799397.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/noxaritawobesubifixopikuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0002/0130/files/wawikal.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/14714701809.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/tivufulinelabuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/define_psychotherapy.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_off00006780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6780 5096 bytes
SHA-256: 85d975bed7002b3b03680e749f00e938a1591ca5c4ba4dee3eb4b08ded455b7e
font_01_sfnt_off000078ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AB 10676 bytes
SHA-256: 0d242eee3c07c44652f5c1abefc589320d5ce4c80b343583a72e6a32b6e2bbf1

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