Malicious PDF — malware analysis report

Static analysis result for SHA-256 5894c871a958c7eb…

MALICIOUS

PDF

46.7 KB Created: 2020-08-21 19:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 853f654c5a61032fea75832b1fad1bcd SHA-1: 934de92b2e075a077be653d11db7382ea29a66ac SHA-256: 5894c871a958c7eb1b7d387ed7b960b75a45229940e53d4d2fe26d48fe5f9ea0
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=b.+f.+a+full+form'. Another critical heuristic flagged the document as a link farm, with many external PDF links hosted on cdn.shopify.com. The document body contains garbled text but includes the same URL as the redirector link, suggesting a deliberate attempt to obscure the malicious destination. No scripts were extracted from this sample.

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=b.+f.+a+full+form
    • http://files.euroasiaict.com/uploads/1/3/2/7/132740399/bonunat.pdf
    • http://files.benobadia.com/uploads/1/3/0/7/130775592/besirakanepax-jofesixo.pdf
    • http://lasafebox.helenpettifer.com/uploads/1/3/2/7/132740470/totoxezasomek_nuzipewo_bifetogufo_davevewufakaxe.pdf
    • http://vedelo.sandbfoundation.org/uploads/1/3/1/0/131070450/6319819.pdf
    • https://cdn.shopify.com/s/files/1/0430/7232/3737/files/merikelege.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/bangla_bukhari_sharif_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3110/8504/files/jerokituburesafikeduvatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/4816911453.pdf
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/mesh_topology.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/povoduxafuxulukapenojizuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/cestino_android_samsung_j5.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6901/files/alien_3_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/8334/7606/files/47446273954.pdf
    • https://cdn.shopify.com/s/files/1/0428/9966/9151/files/corridors_of_time_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/public_health_act_and_policies_in_zambia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dfc.bin
40ca656d910de81669fcc8d3732d67fa6b87a57093da0d2d7eae811261671e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFC 4344 bytes
font_01_sfnt_off00006cb3.bin
7223a286278ab8b706894185ca8509c60f31f65e5151c35ba71e8e7969736659
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 15996 bytes
font_02_sfnt_off00009e15.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E15 4324 bytes