Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ea59272fb12ba4…

MALICIOUS

PDF

45.5 KB Created: 2020-08-08 11:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5af8e3d901234434057b5f6dc8599843 SHA-1: db88dfe5273fc149c4fb55b90504a04d5e910baf SHA-256: 26ea59272fb12ba4816ee7f98e545ec082e4e0fbb8b088e10c05cb9b0c48552a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious sites. The document body itself is heavily obfuscated but contains the primary malicious URL.

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=apio+propiedades+nutricionales+pdf
    • http://files.snarkypaws.com/uploads/1/3/0/9/130969424/debuj.pdf
    • http://kifozij.wellbalancedfolsom.com/uploads/1/3/1/4/131452903/mebumawo.pdf
    • http://files.ursiniart.com/uploads/1/3/1/3/131397964/1082744.pdf
    • http://files.toniandgarry.com/uploads/1/3/1/6/131606677/wewiranumosi_kamaze_zakitejamepir_dofugawofovofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2326/9014/files/38593527285.pdf
    • https://cdn.shopify.com/s/files/1/0446/5518/1987/files/biometria_hematica_valores.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/rumukavigip.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/auditing_cases_an_interactive_learning_approach.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/jixawene.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/pathfinder_carrying_capacity.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/juzexajifusada.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/the_real_book_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2227/0114/files/design_and_construction_of_automatic_voltage_regulator.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/jopelumasido.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/35629077613.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654c.bin
975bba502e6aab8045f7a37091e3c4f75e3089cb2f32326d0902f5fe5c2a8f96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 5020 bytes
font_01_sfnt_off00007663.bin
aab4f51c2b0ca7d524ca0179cfda9830bc73ed3d31d253bf7134764983e859d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7663 11248 bytes
font_02_sfnt_off00009b17.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B17 4324 bytes

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