Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac74677368ddb70…

MALICIOUS

PDF

41.9 KB Created: 2020-10-27 16:54:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 20d9a368e636beed20f5b6ccc9d838aa SHA-1: d8c8ec72a879f09ad2dcf0350cedcb36d953fe45 SHA-256: 7ac74677368ddb70e63d2a5eeb4241e88dc0e885b1394512ad286209af064a69
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.com/123?keyword=team+win+recovery+project+%2528twrp%2529+apk+download In PDF document text
    • https://finijuzado.weebly.com/uploads/1/3/4/4/134444754/tikiga.pdfIn PDF document text
    • https://vekaluledezo.weebly.com/uploads/1/3/4/2/134235689/nuronewoxam_loxituw_jelomesaki.pdfIn PDF document text
    • https://koworuvixoduto.weebly.com/uploads/1/3/4/3/134352933/726819.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/nufej.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/b6ee5f51b3.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/giruxovipoto-sivediberapuno-wasikupevexoxog.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/2307760.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/jaxovazagal-sigezebipexife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f8af63d60e23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_5f9332c6d3eea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f882ebbe551d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f8aae882f5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386849/normal_5f8d83bc83584.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/1/0498/9331/0631/files/33869410644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4129/9861/files/good_wife_series_4_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1255/2864/files/class_11_geography_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8346/4855/files/14667152050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/galaxy_buds_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/9117/0725/files/niritutowabijavidisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/vatexarabobus.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_off0000624e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 5540 bytes
SHA-256: 68d39ca9ea9e0aba0a5fcffbbc38510c2dc8557a60e0620c92a6fbbf5cf96a69
font_01_sfnt_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 10768 bytes
SHA-256: f8500cbe2e06f48d3952c5ff714468aeeec062cecb18a7cd00274831fa4248fb

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