Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbe312348434b38…

MALICIOUS

PDF

42.9 KB Created: 2020-11-09 06:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5a7c70f4f69c6bd0b8757c3cf127214a SHA-1: cccf195c89ac5dab0eaf7b04079df28c89da311f SHA-256: fdbe312348434b38a66e30b2470976eff36c360df5377bc38b1499ddeafeb414
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains the target URL and numerous other links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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/123?keyword=dr+gundry+s+diet+evolution+pdf In PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/3669821.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/bidivo/22nd_wedding_anniversary_gift_for_husband.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/tugupimaxipozilu.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/84553544410.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/20-minute_whittling_projects.pdfIn PDF document text
    • https://lajapadawosi.files.wordpress.com/2020/11/rafevomuvaderale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039560b5-70ff-40c6-8d96-0e481cb2a970/66720333207.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/coto_movie_apk_update.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/86864268165.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6662b453-a1a5-4e4b-933e-221002c5a31b/44836734302.pdfIn PDF document text
    • https://sebuwisawos.files.wordpress.com/2020/11/fipupojuretis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec55154d-b320-436a-842a-247505444064/td_jakes_soar.pdfIn PDF document text
    • https://pidenus.files.wordpress.com/2020/11/information_security_in_cloud_computing.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_off00006970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6970 5160 bytes
SHA-256: 3421115bb1e82a90d0a57754e0e5b488e11233ec1f063872c9ff9ee046cc3a90
font_01_sfnt_off00007b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B28 10316 bytes
SHA-256: aba47f02011165fea375018f816f3966fa0632a4014650d8123b6c79760e8544

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