Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabe115cc06e9f30…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 00:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e35da22c32fe10e438f4f7909d3968c9 SHA-1: 196f3a94273ebace36741d29ffc1f44f8a23d11f SHA-256: dabe115cc06e9f30121e5a78c7b2d09fe4bc1757e362fcfe349fa0ecb56f0b19
154 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which, 'https://ttraff.com/pify?keyword=attack+on+titan+game+3d', is flagged as a malicious redirector. The document body also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or redirection tactic. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links.

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.com/pify?keyword=attack+on+titan+game+3d
    • http://files.belfastgdp.co.uk/uploads/1/3/0/7/130739528/rikejenefalekib-nulux.pdf
    • http://files.hostericaolsen.com/uploads/1/3/1/6/131606688/fezifadasi_rowakazanid_ridazilatusu_kewipipijukun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jamitaribigonekadori.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/battleground_survivor_battle_royale_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/tumaczenie_zda_z_angielskiego_na_polski_wiczenia.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/14512664029.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/ranifasik.pdf
    • https://cdn.shopify.com/s/files/1/0429/8365/3535/files/beyonce_spirit_lion_king.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/basic_bill_of_sale_for_car.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/teresuk.pdf
    • https://cdn.shopify.com/s/files/1/0441/3197/5320/files/86703328249.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/baxenazugironud.pdf
    • https://cdn.shopify.com/s/files/1/0432/9937/3224/files/49974119521.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004703.bin
d5aaadae6b15bcf9c347bde7146563ecadfec34e4977c17424f90853db37a29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4703 3424 bytes
font_01_sfnt_off00005344.bin
22f78c6fd2c78ffa6537ce19678ea5ad6974f4565e899533be9c0bab05bc4ed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5344 4956 bytes
font_02_sfnt_off00006407.bin
470eb9accd2a9ff4ad8e5de3158b333928d348694f1f0522fe6dde519ad6b1c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 9944 bytes
font_03_sfnt_off00008604.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8604 4324 bytes

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