Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3d3d5ac3343862…

MALICIOUS

PDF

69.5 KB Created: 2020-09-01 08:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e4144c5ad46359a128e907f9b378eab0 SHA-1: f70f17f4a973daf814c4ee98804b45424c63a985 SHA-256: 7e3d3d5ac3343862eb7367c29ff03413266b37f14c54155524d465b8e66dd859
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/wix?keyword=tableau+crois%25C3%25A9+dynamique+google+sheet In 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://static.usrfiles.com/ugd/6c032c_a7f2b66e1680494dade760854eb3a77a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3f80ec_aff180cff99c42b48af8532d8dd11b23.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0a0016_4031f3815470409da8f44e5cebadd7ee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/44406856639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/86448271840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4246/files/laparibejanabewemobelemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/zusudulefuzajejipageg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/ibps_clerk_notification_2020_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/32582936579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/land_of_the_dragons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2373/5720/files/34127414792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/61164111465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8252/1512/files/nebusiribidejin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/balikbayan_box_address_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6847/0936/files/mewuxopiladudewalininaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9261/4824/files/17982622836.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE55 5696 bytes
SHA-256: 4bfffbc0137fc4a7b5d185f6148369d3a6e6726f8e04aced57c839901aac90c1
font_01_sfnt_off0000d12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12C 12588 bytes
SHA-256: 8d79cf843d8ad7fa7505aa54fff6a4a86beb83715acdfcf5ea971195de61e5d7
font_02_sfnt_off0000f81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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