Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa78a04048320fb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-31 00:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48a887a5fde5f46ad570a9a4933de51f SHA-1: 93b452d023cf0ec961fd59642c213b651642ee02 SHA-256: dfa78a04048320fb3bfa6209f8008860306efa1311c4680c797bbb49e0f8195b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a PDF link farm. One of the primary URLs, 'https://ttraff.com/wix?keyword=quem+mexeu+no+meu+queijo+minhateca', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and references to other PDF files hosted on Shopify, suggesting a campaign to distribute malicious content or manipulate search engine results.

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=quem+mexeu+no+meu+queijo+minhateca
    • https://cdn.shopify.com/s/files/1/0433/9364/6753/files/javalenonutuxunabukaleku.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/vatolan.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/ximopituwukuwe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/fuzakiwezazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/reportage_cellule_de_crise_france_2.pdf
    • https://static.usrfiles.com/ugd/bd5c68_270ce72671c44220bc54de87e418d08f.pdf
    • https://static.usrfiles.com/ugd/b8c837_621424b95c80457fa38de0bc782c28aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd5da17751e49eab7c71aca8993ecaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0462/1418/5114/files/sakajazufukuteropavilaba.pdf
    • https://cdn.shopify.com/s/files/1/0457/7938/6534/files/cardinal_d_un_ensemble_fini.pdf
    • https://cdn.shopify.com/s/files/1/0438/1209/4109/files/funudubisupexo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8821/4171/files/ultimate_sweater_machine_pattern_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/asignatura_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/31276386160.pdf
    • https://cdn.shopify.com/s/files/1/0438/9994/5112/files/traditions_and_encounters_4th_edition.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_off00007390.bin
49f1282713ec20f6b366cbd120fa95fa83d4a88ca84f9cc8c4333bfb684ad62b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 5064 bytes
font_01_sfnt_off000084b3.bin
abe0194e597bec9af121be96646266708961678f224e5e3b8827afeea75ed41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B3 11440 bytes

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