Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8a1d4c713b3b45…

MALICIOUS

PDF

45.9 KB Created: 2020-08-25 23:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa070502e4c01c61d1f54766e6b9363f SHA-1: 6e8e1cab3a68a416635cc8f242cf044b729e335b SHA-256: ab8a1d4c713b3b45c04a87b1dcdd52a09077cf2edb80e097b83c3b3246e84a7b
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document also contains a mass external PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. The presence of a visual download button further supports the lure-based attack pattern.

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.com/pify?keyword=osha+flammable+storage+cabinet+regulations
    • http://files.transcendedministries.org/uploads/1/3/0/7/130776327/2b2593833c4a5.pdf
    • http://files.maevanaturals.com/uploads/1/3/2/3/132303359/niduvovanaxonib-tafisumuzemo.pdf
    • http://files.cdany.info/uploads/1/3/1/3/131378779/13436e.pdf
    • http://files.transcendedministries.org/uploads/1/3/0/7/130776327
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/degigisopakizosobaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5790/files/greensheet_houston_tx_homes_for_rent.pdf
    • https://cdn.shopify.com/s/files/1/0438/0341/0593/files/somugobi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/kitsap_county_permits.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/poultry_layers_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/xemegiporibomowow.pdf
    • https://cdn.shopify.com/s/files/1/0452/2839/2608/files/55187632805.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/74610067104.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_off0000751a.bin
1a6382927d5b2a90dfa236bc3f94ff8b7f6f3d9d818f84ca154e7c06ce4b029b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751A 5464 bytes
font_01_sfnt_off0000878b.bin
73186db99b64c6c284581aef3bfc487d976a9f07d5d962da95d1c673f382af8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x878B 10200 bytes

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