Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e0538780474ce0…

MALICIOUS

PDF

44.5 KB Created: 2020-08-24 09:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a71562644168939536c2d616a606a8d4 SHA-1: 41e31ab724b56c2b64acbee37a65bf981df8f5a9 SHA-256: c4e0538780474ce012b0ae01da7c7743e60638f03efc928c9caf6d2ec019e600
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.cc/pify?keyword=solitaire+paradise+tripeaks+apk', is flagged as a known malicious redirector. The document body, though heavily corrupted, also contains this URL, suggesting it is the intended lure. The presence of numerous shopify.com links, while some are benign, contributes to the overall obfuscation and distribution strategy.

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=solitaire+paradise+tripeaks+apk
    • http://napaluje.sieglindemcgee.com/uploads/1/3/1/4/131407836/teteworazebinu.pdf
    • http://files.londonmini.net/uploads/1/3/1/4/131438389/fixipox.pdf
    • http://momufoz.deddingtonfarmersmarket.co.uk/uploads/1/3/1/4/131438464/e9bd4baa597d32a.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/ap_us_history_textbook_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/fodisoxisawunoragob.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/24870767967.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdf
    • https://cdn.shopify.com/s/files/1/0437/7280/5277/files/nutricion_alimentacion_saludable.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/21873895947.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/veguwidowubed.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/potepugusuzidifupam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/bachon_k_islami_naam.pdf
    • https://cdn.shopify.com/s/files/1/0439/3231/9912/files/bareilly_ki_barfi_english_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/77647239590.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/barogekuduxutix.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_off00004d09.bin
4c76026feeecac3ac928bbd3477f1f20b81fb91dc636c45ddccfc600b20fe0a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D09 4804 bytes
font_01_sfnt_off00005d61.bin
03ed2f63ae8a3e87b56118bc311da361af13b9131141e319eb643fb076bc28c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 10720 bytes
font_02_sfnt_off00008235.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8235 16036 bytes
font_03_sfnt_off0000969d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 4324 bytes

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