Malicious PDF — malware analysis report

Static analysis result for SHA-256 1864621bbacd02f2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-18 18:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d395ca8a527f60ec7820bbb45bae5bf SHA-1: 47c4eee95e2e7da78de9672615520d7312426469 SHA-256: 1864621bbacd02f23452dfb0bdadcd62da837d59df96ed6d78a877ffcec3ae39
202 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, and heuristics indicate it is part of an advance-fee scam lure. The document body, though heavily obfuscated, contains references to a 'calendar pdf' and includes the malicious URL, suggesting a pretext for the scam. The presence of numerous external PDF links further supports the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ttd+2018+calendar+pdf
    • http://files.oursaviorsdevilslake.org/uploads/1/3/2/7/132712235/bdb0b.pdf
    • http://files.brightsidecbd.com/uploads/1/3/1/3/131382430/wasexe.pdf
    • http://files.ancientcraftstudio.com/uploads/1/3/1/6/131607374/f068e9693c6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8063/7859/files/30130990943.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/fudiliti.pdf
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/6791015861.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/24296200638.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8162/files/biochemistry_by_lehninger_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/konapufose.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/fruity_loops_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/libros_y_registros_contables.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/4755610298.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/wobebewagexerosetezuwogaj.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_off0000691c.bin
85365305974fe1f4a7a33da3135d062ff77d4dbe293f49050fd4395cb243f2fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691C 5440 bytes
font_01_sfnt_off00007ba8.bin
2463ae5b208c38286da6607401b94d5e0fc363e4966f1a6d080d102fafe4d124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA8 11088 bytes

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