Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3f76c1b09e0cd0…

MALICIOUS

PDF

49.9 KB Created: 2020-10-30 00:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c3aeba33130a2e3b3ef1c2b1261b112c SHA-1: 3ab8ccd99fd4446c367dc0eb5cf74a01b72fc256 SHA-256: 8e3f76c1b09e0cd05f58ffa87b318f00dfc7c6ec94a0b03b30fd36b07f3c4195
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Microsoft Office download, which is a common lure for phishing or malware distribution. The PDF also contains a large number of links to external PDFs, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of a malicious redirector and the link farm strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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.club/pify?keyword=download+microsoft+office+home+and+business+2010+trial+version In PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/libigopuvafa.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/kipubakamewez_jusipaxelawu_ruxakog_jeveninasuvugis.pdfIn PDF document text
    • https://xosetumigex.weebly.com/uploads/1/3/4/3/134371377/8489053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377408/normal_5f9b3e8b62e06.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/f05c356571a5.pdfIn PDF document text
    • https://vifesomojijafi.weebly.com/uploads/1/3/4/3/134337648/f86c4a3900.pdfIn PDF document text
    • https://lafapimiwegu.weebly.com/uploads/1/3/4/0/134041150/ac227931211c1d.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/1/0485/9789/3280/files/ragusalomizajeseso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/android_file_transfer_for_mac_10.6.8_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0533/1616/files/game_dev_tycoon_mod_apk_1.5.5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2897/9096/files/gilosovovovotamofago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7718/7781/files/ripimiligalatuzuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9910/9534/files/74572691195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4884/0599/files/9190018723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/honeywell_solaris_7980g_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/neworiv.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_off00008132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8132 5876 bytes
SHA-256: e907c70427022eddc14021f194a2c054dd3f4e6ffda7a19793d3d2d71675b2b3
font_01_sfnt_off00009529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9529 10884 bytes
SHA-256: 2f052fe0e8042f67da3f1c7e55de014cb033c2aa4fc94f1dda3ee213cbaa9044

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