Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e4ae5ac7a5457d…

MALICIOUS

PDF

35.7 KB Created: 2020-08-22 20:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 832595c52f944550753846d4cb95e6d8 SHA-1: fc91cabf2bd62f952493f7750456a96cee62c9d6 SHA-256: b1e4ae5ac7a5457d59f878eda7583002c5d38800aafdb1f2f1a27b0098339738
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many pointing to PDF documents hosted on Shopify. One critical heuristic identified a malicious redirector link (https://ttraff.cc/pify?keyword=bolero+top+speed+video), suggesting this PDF is part of a link farm or SEO manipulation scheme. The presence of this malicious redirector indicates a potential for distributing further malicious content or phishing attempts.

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=bolero+top+speed+video
    • http://files.brucedelfosse.com/uploads/1/3/0/7/130775772/1bf557b.pdf
    • http://files.doramalech.net/uploads/1/3/0/8/130873949/a3118019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0782/7364/files/maplestory_diligence_guide_2017.pdf
    • https://cdn.shopify.com/s/files/1/0457/6270/7620/files/piecewise_functions_worksheet_algebra_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/kukip.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/all_blues_chords.pdf
    • https://cdn.shopify.com/s/files/1/0437/8509/3272/files/3ds_max_2018_update_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/dilosini.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/takazuxakotadadaraz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/24682940468.pdf
    • https://cdn.shopify.com/s/files/1/0451/0928/0933/files/adjectif_espagnol_liste.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/72974724204.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/gezigajiwurewi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5700/4192/files/alsager_school_uniform_suppliers.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_off00004ffd.bin
a4f543ad67926829ff7bd36d31e578b771b4e285e4da42d25b1f0c20b5e1dc1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFD 4852 bytes
font_01_sfnt_off00006096.bin
f1493d85b2ec4e69d0cbaa3575de3316b37e2555c8c96d09f8f1c9659d4c4d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 9788 bytes

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