Malicious PDF — malware analysis report

Static analysis result for SHA-256 52570da1b9703b7b…

MALICIOUS

PDF

44.7 KB Created: 2020-08-05 09:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55a7e44cfd569fe4b0f5f126dac836b9 SHA-1: 71d46c0c7126e7fe02326f1d61812613d762fb4e SHA-256: 52570da1b9703b7b15f8477fd13cf48a3dcd38b00b1851e4080cf55f23eaa04d
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting the document's primary purpose is to drive traffic to this malicious site. No scripts were extracted from this sample.

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/pify?keyword=sedentarismo+en+mexico+2020+pdf
    • http://files.countryrichfashion.com/uploads/1/3/1/3/131381414/cffe34ba8477.pdf
    • http://files.mjkyarchitects.com/uploads/1/3/1/4/131437149/laweg.pdf
    • http://files.rasacacorporation.com/uploads/1/3/1/0/131070291/lirali-mitosovurewofa.pdf
    • http://files.panisangelicuspress.com/uploads/1/3/0/7/130739740/funisuz.pdf
    • http://files.lakeplacegallerycreations.com/uploads/1/3/1/3/131381658/nomiralan.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6192/files/loxibivojogidulanubalaxud.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/94972792026.pdf
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/19379921011.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/23734200684.pdf
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/34397179549.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/65468962242.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/renal_tubular_acidosis_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdf
    • https://cdn.shopify.com/s/files/1/0429/6615/5430/files/79016878934.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/guriroz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/attached_dr_amir_levine.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/93654574199.pdf
    • https://cdn.shopify.com/s/files/1/0438/4037/2896/files/97278888337.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_off0000603f.bin
7e5c3f0dd2134f14932567ab1f17cb433611affa02268a588658147dd6d81f00
pdf-font-stream PDF embedded font (sfnt) at offset 0x603F 5500 bytes
font_01_sfnt_off000072c8.bin
113ac24f26fa50b69ae3401f03bf72dca20f9cb064f73f352724c001c39eee15
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C8 10772 bytes
font_02_sfnt_off00009601.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9601 4324 bytes