Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de362f67edee621…

MALICIOUS

PDF

62.3 KB Created: 2020-08-19 02:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8600c357c3d770e4d0126473dadc85 SHA-1: 25a8b2e7defde89c47f44c57b1f8c0ba99c8c601 SHA-256: 0de362f67edee621abb74456756385734e5f967f2884b1cd2c20cfb3fdb8acb6
194 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, presenting a fake online quiz to entice users to click a link. This link, 'https://ttraff.cc/pify?keyword=java+online+quiz+with+answers', redirects to malicious infrastructure. The document also contains a large number of links, many of which point to PDF files, suggesting a link farm for SEO manipulation or to host further malicious 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/pify?keyword=java+online+quiz+with+answers
    • http://files.foothillsrh.org/uploads/1/3/0/8/130874058/4256746.pdf
    • http://files.thehighground.shop/uploads/1/3/1/3/131379253/4932646.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/ps2_action_replay.pdf
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/32921527912.pdf
    • https://cdn.shopify.com/s/files/1/0446/6225/9865/files/vokiganujukijot.pdf
    • https://cdn.shopify.com/s/files/1/0436/1070/1981/files/vomorawenaduxag.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/11696111547.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/xosodorujanis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/tejemusizapew.pdf
    • https://cdn.shopify.com/s/files/1/0434/6478/6086/files/pamoserusetosewuxozekuzi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3987/3429/files/faded_zhu_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/wulenu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/57289922774.pdf
    • https://cdn.shopify.com/s/files/1/0429/5596/4569/files/forukod.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b092.bin
619bf726d367b4c017c1fef38d77c044a6c4d472699d0865bec235e6c556e073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB092 5088 bytes
font_01_sfnt_off0000c1f8.bin
1c38b670a551118d44189aee212834315658e293b38596d1240cf30b30867fef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F8 13152 bytes

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