Malicious PDF — malware analysis report

Static analysis result for SHA-256 adef341ddd8cdd80…

MALICIOUS

PDF

43.3 KB Created: 2020-09-11 08:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 966904b5092b21d4f272491435b2b735 SHA-1: 62f2902c66bdb583277de9137d6941f0f70deb3d SHA-256: adef341ddd8cdd80d05e8d3bd30ad91fccb02ac03ae5f1e9b294f7f0b9def323
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link redirects to `https://ttraff.club/wix?keyword=dirt+off+your+shoulder+song`, which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.club/wix?keyword=dirt+off+your+shoulder+song In PDF document text
    • http://files.rocnifinland.net/uploads/1/3/1/6/131637194/xalorexipijofum-kusotebeveb-xaxebozomexaj.pdfIn PDF document text
    • http://files.nathannewcomerart.com/uploads/1/3/1/0/131069887/demujuw_pixuxulu_tupiz_bufebujajasobo.pdfIn PDF document text
    • http://furusila.heavenstinyangels.com/uploads/1/3/2/6/132695832/8000cbe7e540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/mofixodepokiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/60708560840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1607/6694/files/54096145307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0764/5595/files/svu_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5063/8241/files/wejipavelusonil.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8dde66_42a43c2f781e4c82a74df0b61a95db38.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a107db_08606452eee34e37881cae491db9f9e5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dd4472_316d16ba49bd455e9b2e7f50eb5bc0e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2b3f46_75229d28f72b42a9b9fb6f42498eecbf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc089a_7110efdcac11421185be8fd1bdd8d20e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4f92c1_8c504c0fa6784983910f230ddfad6691.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0b46e6_11ceb814568a47b39f9e1bfbd316f957.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDA 4940 bytes
SHA-256: 02e676ca1b0e71bf90df78f5f49ce6e017e09f4e4fb77e067190bd2ec9e0d4dd
font_01_sfnt_off00006eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 10396 bytes
SHA-256: 37f17070de85602532e71a34eab01b801c8504c7dcf9f1579b36270fc57f401c
font_02_sfnt_off00009242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9242 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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