Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba60a47ec707b64…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 23:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c59f9722dc0e5efe49c950d6d4cb751 SHA-1: d0d749eed9c0216b26bfbb0660cd8c280329b1b1 SHA-256: cba60a47ec707b6473b3450729409e05cd3d41e80568fee78a93970aca0f272c
150 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded artifacts reveal a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=siyavula+physical+science+grade+11+pdf, which likely serves as a gateway to further malicious sites.

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.cc/pify?keyword=siyavula+physical+science+grade+11+pdf
    • http://files.jonschubert.com/uploads/1/3/1/4/131453536/bidufikexu-falavomewizive.pdf
    • http://files.healthiestsickguy.com/uploads/1/3/1/4/131437513/sebabo_jurusagox_vukadalak_pumitebupuge.pdf
    • http://files.nejcrwc.com/uploads/1/3/2/6/132682471/gebexalabeso.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/ups_shipping_rate_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/niriku.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/sumibalikugezewakonirir.pdf
    • https://cdn.shopify.com/s/files/1/0434/2346/5628/files/89316487669.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/bozasalukefegog.pdf
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/55591376058.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/88846497946.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/41562421232.pdf
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/60347135622.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/kajigumuxixijutisemorotuz.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_off00004d2e.bin
99a626f04d5927beaeb5bb994d80867156ae7eabbb0a6bc59dcb7c756fc49c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2E 5428 bytes
font_01_sfnt_off00005f93.bin
41159b8d2b5d270a1d2e05d47fcda64f5f62a5b4f4b6a334427255f497c6a0f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F93 12504 bytes
font_02_sfnt_off000087e2.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 4324 bytes

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