Malicious PDF — malware analysis report

Static analysis result for SHA-256 747982f598a48d89…

MALICIOUS

PDF

35.1 KB Created: 2020-10-07 06:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1acb26418adb20621d3b3b4073eb5f6f SHA-1: e70b619b4e42d43113bf80c1efd447c17265aaef SHA-256: 747982f598a48d896f1952568163d5a118c6b108b5a1ef1c273af500b6f14cbf
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The document body appears to be corrupted or obfuscated, but the presence of numerous external links suggests an attempt to manipulate search engine results or redirect users to malicious sites, potentially as part of a phishing or spam campaign.

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/pify?keyword=lowrance+hds+gen+2+hard+reset In PDF document text
    • http://lezizo.maranathabiblens.com/uploads/1/3/0/7/130776132/4893919.pdfIn PDF document text
    • http://files.scheepswerfotto.com/uploads/1/3/2/6/132696214/7486585.pdfIn PDF document text
    • http://files.tessiergourmet.com/uploads/1/3/2/6/132695880/2840025.pdfIn PDF document text
    • http://suvopoxon.dieterwentzel.com/uploads/1/3/1/6/131606227/5555604.pdfIn PDF document text
    • https://site-1039324.mozfiles.com/files/1039324/57041681571.pdfIn PDF document text
    • https://site-1048222.mozfiles.com/files/1048222/ronel.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/1/0432/3439/4276/files/vapopekovakakapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/38165047264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9752/1047/files/1803737898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/wosutobagiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8930/8064/files/the_empowered_wife_audiobook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8530/9103/files/6836743987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/bostitch_framing_nailer_n80sb_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1817/files/no_mans_sky_exotic_ships_seeds.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_off00004b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B36 5332 bytes
SHA-256: 212918a013b213b7a41a37d1bce7a09c7ac7553f3bc54d612715c0e72e8f371d
font_01_sfnt_off00005d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D64 9952 bytes
SHA-256: a02b889e46445398aa532e98b5fe544228bc9cca0c94783cf30ca3c65848c113

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