Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a26c4de6171e73…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 12:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b44f0c55de417177391ccfa780d1a87 SHA-1: bbc3fb3aef74e3af6ea6bbd6908270b167525be4 SHA-256: 32a26c4de6171e73d7837664ed43b126c20897d6f9b32ab670dbe6f247a09937
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, https://ttraff.com/wix?keyword=mur%25C5%259Fit+5+indir, is the primary indicator of malicious intent. The document body, though heavily obfuscated, appears to contain this URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, while many resolve to benign Shopify domains, is characteristic of SEO link farm techniques used to obscure malicious activity.

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/wix?keyword=mur%25C5%259Fit+5+indir
    • https://cdn.shopify.com/s/files/1/0466/7179/0245/files/42866820804.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/plastic_blow_moulding_process.pdf
    • https://cdn.shopify.com/s/files/1/0435/1030/0831/files/king_s_ultra_greatsword.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/88775484880.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0282/files/mount_and_blade_tax_inefficiency.pdf
    • https://cdn.shopify.com/s/files/1/0441/4518/0824/files/duchess_of_malfi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0435/5643/8165/files/free_ppt_diagram_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/javascript_create_unique_id.pdf
    • https://cdn.shopify.com/s/files/1/0434/7704/1304/files/malaria_symptoms_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/fajafavebesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8373/4943/files/28107229525.pdf
    • https://cdn.shopify.com/s/files/1/0462/2771/8293/files/46051226564.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/55077971476.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_off000061be.bin
0b637ba65f93e569e369c976f0f18153176f4f3340a6e6538e5102c466ee62a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 4776 bytes
font_01_sfnt_off0000721a.bin
fff56129c074aec896ba3c5a31e48a88a3db11bc060e99200c723f80aa09835a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721A 12192 bytes

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