Malicious PDF — malware analysis report

Static analysis result for SHA-256 57967ed6a3b1d8af…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 13:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cca7657312efa95559dc1106bb8ef16e SHA-1: 80b63857b9d77dca64103eda2775dca354f34168 SHA-256: 57967ed6a3b1d8af7123cb96accf73415d6dc86920b086477f2f9af063180a41
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains references to 'Dolly Parton diet soup' and the malicious URL, suggesting a lure to a scam or phishing page. The ML classifier also strongly indicated maliciousness.

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=dolly+parton+diet+soup
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/sinitutatofaxiwugis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/pulugonenewizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6942/files/77554233558.pdf
    • https://cdn.shopify.com/s/files/1/0438/0318/1218/files/sexakig.pdf
    • https://static.usrfiles.com/ugd/d5d855_82f6fe7816464dec81e22a9b4648c549.pdf
    • https://static.usrfiles.com/ugd/1849a1_65f52dbb879841f6bf38e4a728fc0102.pdf
    • https://static.usrfiles.com/ugd/b8c837_997157d551bc4884a913108b97e2cfbe.pdf
    • https://static.usrfiles.com/ugd/432b07_4ffe33015a9f4863bdb8de8f0844eec4.pdf
    • https://static.usrfiles.com/ugd/5e8de6_c9726d0657644af3b81653ea96c02498.pdf
    • https://cdn.shopify.com/s/files/1/0434/7002/8966/files/how_to_be_a_good_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0447/1400/0540/files/libro_para_aprender_a_dibujar_manga.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/nesukader.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/nitigoge.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/baadshaho_movie_ajay_devgan_hd.pdf
    • https://static.usrfiles.com/ugd/b8c837_153ecf9950d243c89120531898891fff.pdf
    • https://static.usrfiles.com/ugd/de3d83_16fc8d95dc204028aa38edaf59813f57.pdf
    • https://static.usrfiles.com/ugd/b8c837_aea8e53dc91445bc9d722d7427837de9.pdf
    • https://static.usrfiles.com/ugd/7baf93_42c50ab1d7ad4474adad4c4af925b0f1.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_off00006a7d.bin
9d721db72ef57241f7928731b007cc284aca1de0276616f42483838e526b30e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7D 5052 bytes
font_01_sfnt_off00007bbe.bin
9906d87c07cd88c13729d08ccc78541e1f809cea182ac21a8986fa5554a2e48e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBE 10668 bytes

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