Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe51f6656a65354…

MALICIOUS

PDF

40.3 KB Created: 2020-08-17 08:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 471d533a62417ce5c52f4845100d9073 SHA-1: 3210baf087f13fcebbba4bc4965673992d397141 SHA-256: ffe51f6656a653540743b326ce1a4987d676aa801d6fc004a3c7f6b3ade2b78f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=ion+practice+set+worksheet+answers'. This indicates a probable attempt to direct users to malicious content, likely for phishing or malware delivery. No scripts were extracted, and the document body is heavily obfuscated.

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.ru/pify?keyword=ion+practice+set+worksheet+answers
    • http://files.body-knowledge.com/uploads/1/3/2/6/132681824/2094315.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0318/files/banutelunemuximixutuzores.pdf
    • https://cdn.shopify.com/s/files/1/0431/5342/4540/files/17437218635.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7151/files/java_se_binary_stopped_working_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0429/2529/3724/files/discord_waht_to_have_in_a_server.pdf
    • https://cdn.shopify.com/s/files/1/0453/2695/8747/files/watirirolaso.pdf
    • https://cdn.shopify.com/s/files/1/0440/3003/4085/files/59890404000.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/url_response_get_rid_of_slashes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/fujofobetitorogabubonati.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/canon_ir_adv_c5250_driver.pdf
    • https://cdn.shopify.com/s/files/1/0452/1161/5392/files/botika_ng_barangay.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/zemafokibuwegejakuwesija.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/40571654837.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/magnetic_effect_of_electric_current_class_10_notes.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_off0000600b.bin
ba7136b1d59f49bd625480dc6547dbd3f66a7f9fb73428cdb7850c5bea51e6fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600B 5084 bytes
font_01_sfnt_off0000715a.bin
2988a6dcb46f1cea43ca600f7939749d99e071f792fec838a2a6cb1e8679ec74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715A 10304 bytes

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