Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc237df187b57dc…

MALICIOUS

PDF

108.5 KB Created: 2020-08-29 07:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e215d41ebaf3e0468eb0f3802147ca75 SHA-1: be5ac511ffca390e869ba4a9366d361affed1e5f SHA-256: 8bc237df187b57dc194d3c7b1a478ec247ab503c2bbfc078c68463364abefd55
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to body language, and the embedded URL points to a redirector. The PDF_SEO_LINK_FARM heuristic also indicates the presence of numerous external links, likely for SEO manipulation or to distribute malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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.cc/wix?keyword=como+conocer+a+las+personas+por+su+lenguaje+corporal+pdf+completo
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/35473171896.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/ripikoxifur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/vesperia_secret_missions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3298a38d1344a948ab5f66ce293a1b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a3a734cf46e429b9e3999b0607068bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_86e0a1df3c06419284ae1ae96e394199.pdf
    • https://static.usrfiles.com/ugd/b8c837_a77fcee47bbc407a82ad57eb7e063926.pdf
    • https://static.usrfiles.com/ugd/b8c837_64db29e16dae4f79b5eeb78c8e0a4e86.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/xunirutazoliseselarupinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7823/7856/files/accident_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/3559/8758/files/72383026776.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/mezoxujakoxedalelumafapob.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fcdaffbb33842108e0b76d91e35c6bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_eeb3b2e7382c4d3a8e6af164e73f8587.pdf
    • https://static.usrfiles.com/ugd/b8c837_e59049d69c4b45eb975085bc52814b9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa9ca426d15349f3a5bc093628f85eeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ea55b7faf6f4a14b06759d01b5ff17b.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/
    • https://static.usrfiles.com/ugd/b8c837_e59049d69c4b4

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016a6a.bin
ab3e0ecf37f2d8cfbf24a208f58c587be4b8b0579b05bdd54159790313097c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A6A 5456 bytes
font_01_sfnt_off00017cdc.bin
0b90412e67f0717fb8f312ba1c5998257d323fccdc93938f5e5c1203ce84af11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17CDC 11464 bytes

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