Malicious PDF — malware analysis report

Static analysis result for SHA-256 56aaa07727084882…

MALICIOUS

PDF

46.6 KB Created: 2020-11-03 07:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 37bbb8dec0d05b33884e0008f19e6e77 SHA-1: d755215903068eef8fcd88424ac162aa462eac35 SHA-256: 56aaa07727084882af44489c200ff757f9f76758dbc6f50e1d2bbb5ae814fcc8
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://gettraff.ru/strik?keyword=spite+cannon+2+flash+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f97d95a6f487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f90d7b81a0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f969831240f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f8bd3219047e.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/jinakapurepe.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/gozesimoruwawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5f882f12e10ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2896/1191/files/wopabesisozobidukip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4195/5221/files/rwo_oily_water_separator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/semogididu.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/27035251732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0510/7223/7733/files/multiple_a_doll_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5171/9074/files/anna_maria_mayda.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/scientology_materials_guide_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/words_that_start_with_biography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe5491a2-5ffd-4c20-9f6a-4b7bfaeec53a/danganronpa_v3_trial_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/sinogovaxedizinez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 5356 bytes
SHA-256: 1ba6e9896c0b1a11a2abdc66ab3b8094a88e60767790efa7aaf2ea13cdf52376
font_01_sfnt_off00007af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF0 10712 bytes
SHA-256: 833e5781fb9c328f7b217830b24d5859e5942da35e24488895ebce7b83dd6e86
font_02_sfnt_off00009f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F65 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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