Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a39f340a7df9b70…

MALICIOUS

PDF

181.0 KB Created: 2020-08-02 06:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eb93cc504c3f7a40d6979cff1735883 SHA-1: fbdbbd304a93fd89783e2ac2cd75b915c76c13c5 SHA-256: 2a39f340a7df9b7025151efaf7a239021cb62c43babb611ab057058383ac0036
92 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=mysql+you+are+using+safe+update+mode'. The ML classifier also flagged this PDF with high confidence. The document body contains the same URL, indicating a direct attempt to lure the user to a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=mysql+you+are+using+safe+update+mode
    • http://files.afuricupertino.com/uploads/1/3/1/4/131452903/5380194.pdf
    • http://files.myneighborhoodpt.com/uploads/1/3/1/1/131164081/cfc3354132e.pdf
    • http://files.trueholinessnde.org/uploads/1/3/0/7/130776341/wumudav-vilijarapiwu-fowemotanoz-setabuv.pdf
    • http://files.williamsburgrec.com/uploads/1/3/2/6/132682745/tagogumolizim_fofuzipupi.pdf
    • http://files.the-simple-kitchen.com/uploads/1/3/0/7/130739239/leforediramodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/malabimakisusewabem.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/nowesesewomeroworaba.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/17016676582.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/85736422508.pdf
    • https://cdn.shopify.com/s/files/1/0434/8153/0534/files/bufofakilixiwadejitad.pdf
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/kuwifolozowiworoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/vogebirire.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/28834699523.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/kabunafijafuzanav.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/98517979341.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/vexuxiwiwikoguruvuxuje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028038.bin
164326309406dfaa360a598fd8218c35a40dec15c8e5f63951a857db4241d2aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x28038 5592 bytes
font_01_sfnt_off00029341.bin
fdf206c8dca3a47e6af4ccd3fb621f4748a93edf35742ff8d7b16ba60a71049a
pdf-font-stream PDF embedded font (sfnt) at offset 0x29341 15872 bytes