Malicious PDF — malware analysis report

Static analysis result for SHA-256 276f10ddbbd997e6…

MALICIOUS

PDF

36.8 KB Created: 2020-10-25 17:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 090b1acb7380ac45c21bfab96d3ff3ba SHA-1: e5cf9c67d25e46003cc628e4f346d52e13688d1f SHA-256: 276f10ddbbd997e68195126829f171b46c3fbb80bac57bd5a2b66025bcf608f4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.cc', which is flagged as malicious. The document body, though obfuscated, contains keywords related to 'printable nfl playoff schedule pdf', suggesting a lure. The presence of a link farm heuristic further indicates a malicious intent to distribute links to potentially harmful 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://ttraff.cc/123?keyword=printable+nfl+playoff+schedule+pdf In PDF document text
    • https://jomunibudax.weebly.com/uploads/1/3/4/3/134342604/vubixafavili_nixobajod_kadowulapopiku.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/xiniguvukivixa-zotupaz-jawavu.pdfIn PDF document text
    • https://gawubodukajine.weebly.com/uploads/1/3/0/9/130969599/dolobuku_xejim_vomanokedidexol_xuwijekof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f91504371479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8d3c92533d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8f6afd456c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386613/normal_5f91e69f39ad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375525/normal_5f8aab3233b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8803a2aabc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408462/normal_5f95038b12f80.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dujepav/breathing_exercises_for_copd_patients.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/begone_satan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3041/3980/files/mudusisajefifipikasopiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7582/2278/files/kitchenaid_kfp0711cu_7_cup_food_processor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8535/7743/files/canciones_de_navidad_puerto_rico_acordes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7796/9069/files/monografia_sobre_gravidez_na_adolescencia.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/pasiwepupakosaninedor.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/bezuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/bebop_scale_licks.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/fomalibafupodit.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/55062274522.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_off000050e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E8 5484 bytes
SHA-256: 4a7e843eec7b8c317b139eb0c438e089a785d67421e4b21c98993fbe785ffff5
font_01_sfnt_off0000637d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 10040 bytes
SHA-256: ff7f3300e2f1b166161a3cba847b7f43e4a584c4bf9b45597389bfc2a0b6c74f

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