Malicious PDF — malware analysis report

Static analysis result for SHA-256 68357361e31e17a7…

MALICIOUS

PDF

43.2 KB Created: 2020-11-02 12:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 33576df36ad0c0c45ee172e67c16f6ff SHA-1: b0b1c07bceb4c33e0393116ad41d657629f0fe9a SHA-256: 68357361e31e17a752c187f2ef371dfd08b0fab1dd42f161b9d3d410eefab376
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to redirector infrastructure or are part of a link farm designed to manipulate search engine results. The primary malicious link identified is 'https://ttraff.com/123?keyword=scott+county+warrant+search+mn', which is flagged as a known malicious redirector. The document's content, though obfuscated, appears to be a lure to encourage users to click these links.

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.com/123?keyword=scott+county+warrant+search+mn In PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/zodiz-dusamofovi-mamevivej.pdfIn PDF document text
    • https://nulosogitizibe.weebly.com/uploads/1/3/4/3/134317173/8587814.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/xizowapewipilaxat.pdfIn PDF document text
    • https://kavivapepegag.weebly.com/uploads/1/3/4/2/134235540/pesitodorebo.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/1/0497/2186/8449/files/jolotorumokozunadovibajo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/tuzatogesanokozipa.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/fexonulafowokumivawezike.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/netesivulapupulerej.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/calculus_in_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/kabeput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8489/9011/files/xereto.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/fiwubiromaxorat.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/jutajosesirabusemosexexe.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_off000067e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E0 5304 bytes
SHA-256: f35555f15f0ca589447510105fee79b308f826cc9b7620acc2714292723e2566
font_01_sfnt_off000079dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DD 11220 bytes
SHA-256: c5468ded5e0ed7f506fbd7c2e3f1236163c51515b83a0920e822307e89a547b4

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