Malicious PDF — malware analysis report

Static analysis result for SHA-256 c052cfaec98d5114…

MALICIOUS

PDF

38.6 KB Created: 2020-10-28 15:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 430fa1d62371773d856cde07389020f3 SHA-1: f226b90dfddb77e2d76fb54e81407a2b79bf29c0 SHA-256: c052cfaec98d5114a5e1c65072453b011e2126fcb5fd79bf8184954b00d39450
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to external resources, with one critical link identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for a free PDF download, which is a common social engineering tactic. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting.

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.link/123?keyword=a+student%2527s+guide+to+vectors+and+tensors+pdf+free+download In PDF document text
    • https://gunevutatute.weebly.com/uploads/1/3/4/3/134361501/lazonupawuvom.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/zawokazizigulas-sajup-kubuzew-fonedovavomuxa.pdfIn PDF document text
    • https://didavetamij.weebly.com/uploads/1/3/4/3/134320859/zeripofexileke-bidapaf-petejovasun.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/vabikadapetota_dajeseni.pdfIn PDF document text
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/6742854.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/9018556.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/ledonokeberuso-kobifebonewen.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/1/0483/7261/3280/files/barkalow_middle_school_supply_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9055/1981/files/tolt_pipeline_trail_bike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6217/7177/files/mejor_reproductor_de_video_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7492/7774/files/electrolux_washing_machine_eww12753_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/dibedudogubemujebaragi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4640/1711/files/44823951776.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/37671215219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6027/2808/files/cell_cycle_regulation_pogil_packet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/amelia_bedelia_goes_camping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/33466167899.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/fx_audio_dac-x6_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7027/3174/files/hillsborough_county_fl_student_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/basic_information_about_computer_in_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7286/3399/files/vovivogef.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_off0000581c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 5500 bytes
SHA-256: 69ecd6ad764dd32a8c3c43049dfbfe955f187a83433db6e3ea686f9122f0978b
font_01_sfnt_off00006b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B02 9828 bytes
SHA-256: 4074dcf818b4c9aafe54b098157a73e5945d71ef4cf3f14caf390e9dea74a1b7

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