Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2217e2c8cd0fd2…

MALICIOUS

PDF

204.1 KB Created: 2020-08-15 06:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4d947102c1e15fe220e306daa5e6f90 SHA-1: db292ac2a64a235a7b7b78e632f1fc7c42ffc058 SHA-256: 9c2217e2c8cd0fd20795c4b968b72bedb3f4e818e950cfbaf11760da853d249c
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=systemic+lupus+erythematosus+guidelines+2018+pdf'. The document body also contains this URL, indicating it's the primary lure. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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/pify?keyword=systemic+lupus+erythematosus+guidelines+2018+pdf
    • http://files.renuartportfolio.com/uploads/1/3/2/6/132681156/630150875e63d.pdf
    • http://vifexavew.impkidz.com/uploads/1/3/2/6/132696398/luvadizorisi.pdf
    • http://files.bcgoaltendingmuseum.com/uploads/1/3/1/8/131856232/bapotuxe-bixesigunover.pdf
    • http://lemiwapod.fbcmon.org/uploads/1/3/0/7/130775934/jexaduxodutofa.pdf
    • http://files.starwoodequine.com/uploads/1/3/1/6/131606118/sitepanoni.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/tuzozoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/osrs_firemaking_calc.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/85033058403.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/callan_method_book_9.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/5805361683.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/vutovufekelaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/gokozisufew.pdf
    • https://cdn.shopify.com/s/files/1/0447/9015/3365/files/18204635670.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/11422209887.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/41851744858.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/jolutiwame.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002c7b9.bin
294ce8b8d99143e430dc6b0e52b2c8f7fb607228993989dbd0f26e287ccb13de
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7B9 6296 bytes
font_01_sfnt_off0002dcfc.bin
0b4ecdf1f16ccfd51be242c0498c91e565e9535d24fb8a528111006738a8af4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCFC 14616 bytes
font_02_sfnt_off00030b7e.bin
c6f9f0fa34c9d7a8d449efa66bf771f8fa3a7f94bc781901e79ac11813a92c76
pdf-font-stream PDF embedded font (sfnt) at offset 0x30B7E 16272 bytes