Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a1efb2e1d9f6d2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-15 08:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759c8afdc413ffb5f3f4b6e52e0fe73a SHA-1: db11eafb361dc296a301c3ea783a3024a3816cde SHA-256: e5a1efb2e1d9f6d27fe7c40f8f4dacea19d0dd22cccef56f3b0c2c23b5240380
140 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. Another critical heuristic identifies it as a PDF link farm, with many links pointing to Shopify domains, likely to obscure the malicious destination. The presence of a callback lure heuristic suggests a potential tech-support scam or phishing attempt. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=bottomsheetdialogfragment+set+behavior
    • http://sotuv.somedaynewfoundlands.com/uploads/1/3/1/8/131857054/xurezanukatafonitur.pdf
    • http://petup.ncfoodactionplan.com/uploads/1/3/1/6/131636725/6872728.pdf
    • https://cdn.shopify.com/s/files/1/0440/9291/5864/files/plant_systematics_phylogenetic.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/65138159540.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8074/files/79402429372.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/xujanufinalarawuxajanato.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/pdf_to_word_editable_converter_free_download_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/55298618370.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/xitokiluwoxasokex.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/pernos_astm_a325.pdf
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/68165591673.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/completely_randomized_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/xuzuzawelo.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_off0000637d.bin
22741685c1d8e2c34a95d7c33af0702d98857d061d0ec8760e51ed8210547891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 5568 bytes
font_01_sfnt_off00007655.bin
4a6e2092f2c7848af1228c3d676f9839b7b53f0947db0852494615ec02dcba30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7655 10232 bytes

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