Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d30d131c98c8696…

MALICIOUS

PDF

37.3 KB Created: 2020-09-01 06:34:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05caf922a1031fefeeb52c10ca49b863 SHA-1: e21ee84e473c33c7aae5fe1d689b55e871b2e260 SHA-256: 9d30d131c98c86965f084bcbff5cf6e9aea5a5fbdd73a9d0ea2d8cd1034b6eee
150 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 of which point to a link farm hosted on cdn.shopify.com. One of these links redirects to a malicious URL on ttraff.com, which is likely intended to deliver a payload or phish for credentials. The document body, though heavily obfuscated, contains the malicious URL and references to software downloads, supporting the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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=facebook+lite+old+version+apk4fun
    • https://cdn.shopify.com/s/files/1/0440/4278/0837/files/74626986856.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/5931324918.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/bootloader_android_5._1.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/kathi_tamil_movie_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/xusilewipofejute.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/25157456724.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/lutebusavimavob.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/ginapopizow.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5637/files/bung_englisch_passiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/90440199073.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8615/files/tidofizutudeke.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/codex_space_marines_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5266/1926/files/asme_a17_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8933/7256/files/gulenuwitatexikoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/72005717781.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_off000053c8.bin
dc62c0b713db0ee97dec5ce1556b7fa06e1d730ba7be7e811af2a0b70729ace3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C8 5456 bytes
font_01_sfnt_off0000666c.bin
0f8114d1f1e0383bebb728188d5ef910700d85f2a28e1b05071c94594b58f923		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 9928 bytes

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