Malicious PDF — malware analysis report

Static analysis result for SHA-256 e541138476f9d794…

MALICIOUS

PDF

42.8 KB Created: 2020-10-22 18:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4eba5bab5eb7a46065178cc36442e7a1 SHA-1: 1c468096a1a623cecdf6a697efc5b25e1dca21d4 SHA-256: e541138476f9d794043ce16e0e86b95f23d447959e834e54b8877bbd9935a0dd
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is a strong indicator of malicious intent. The document body, though heavily obfuscated, includes the same URL, suggesting it's the primary lure. The ML classifier also flagged this PDF with high confidence. 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 3

  • 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.
  • 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/pify?keyword=cognitive+theory+of+first+language+acquisition+pdf In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/tujuwizizilelof-mugujo-jifewifuja.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/taneze_luxezasexozuva_nezin.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/1/0266/8124/5870/files/sifetorijasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/fortnite_item_shop_today_pro_game_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8501/4213/files/catching_fire_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/61287550726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944c4b55-92c6-4e22-8b65-d0eaf54ced0b/loxutajubul.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/difference_between_c_c_and_java.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/synthesis_of_benzimidazole.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/marketing_strategy_of_apple.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/61472424469.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/96216452483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fb93e22-8a88-4880-a68d-d44229cece30/28177454643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6287523c-234e-4e6b-99db-cec52ed54b96/13491496043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d42277-d012-4343-9c50-714d299da68b/wanepapa.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_off000069b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 5612 bytes
SHA-256: a9fbdc468bcf3465342fda94689288dd84cc95eff1cd52d9a9d892ef0de5606b
font_01_sfnt_off00007cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD8 9796 bytes
SHA-256: 51dfb63022c291cf105808558e671ebb3b756bc8089eaf1745e4e21717fc416e

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