Malicious PDF — malware analysis report

Static analysis result for SHA-256 51f6ecb19a1b9f5e…

MALICIOUS

PDF

44.0 KB Created: 2020-08-21 05:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e8484b317dc485765e782a5d10aea0c SHA-1: e7ab2bc5ea151f4c29b287b5a6228d81f6d84440 SHA-256: 51f6ecb19a1b9f5e77f2a74f87689260fe211af2c57b940607bb88c25dfd9067
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to a URL designed to trick users into downloading a Canon printer driver. The document also contains a large number of embedded links, many pointing to benign Shopify URLs, but the presence of the malicious redirector indicates a phishing or malware delivery attempt. The document body is heavily obfuscated but contains a reference to the malicious URL, reinforcing the phishing lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=canon+printer+l11121e+driver
    • http://files.manpatools.com/uploads/1/3/1/4/131406735/jijiwakarok.pdf
    • http://files.taylormadecompany.com/uploads/1/3/1/4/131453276/46f0a.pdf
    • http://files.jar-labs.vomifix.com/uploads/1/3/1/4/131452778/rewuk.pdf
    • http://laruxuk.bigwoodns.com/uploads/1/3/0/8/130874642/132754.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/basics_of_differential_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kebiwubinixakagaxirefu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdf
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/chemistry_formula_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/79516545124.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0432/8135/0820/files/datarinajolatoxiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/22467754645.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/votuvibojodururajilawudox.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/alice_in_chains_unplugged_full_album.pdf
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/neopets_restocking_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/acceptance_letter_format_for_chinese_government_scholarship.pdf
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/steam_ark_restarted.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/lausd_web_filter.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/65297749905.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_off00006f0c.bin
01f6c81477c82c293af42e9b25c87b8c7af08a3271acb0d9d25cf2cd30fa5a3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0C 4924 bytes
font_01_sfnt_off00007fe1.bin
3ed21166994d840c70e815f07aa7c2e838ce1cec98691357f2b5a08da74d2629
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE1 10304 bytes