Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf384a0222f0483…

MALICIOUS

PDF

44.3 KB Created: 2020-07-28 06:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d726461782380042bd4bbfcd0b8aca SHA-1: abc4d93241f00fbbba71184c514ae0cc90ef0aea SHA-256: 8bf384a0222f04831dd760167d29e37dac0185726ad9ebbbc1a829b17cd82781
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 16 external PDF links, many hosted on Shopify. One of the primary links redirects to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, appears to be a lure related to 'Gt bikes frame size guide', suggesting a phishing or scam attempt.

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=gt+bikes+frame+size+guide
    • http://files.yvonne-jones.net/uploads/1/3/2/6/132695321/teraduso.pdf
    • http://files.jstarkdesign.com/uploads/1/3/0/7/130776561/xiluviruderizite.pdf
    • http://files.promiselandgospel.com/uploads/1/3/1/8/131872032/nisomuwatadom.pdf
    • http://files.liveplayband.com/uploads/1/3/0/7/130776655/vojix.pdf
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/guwamutusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/5916333535.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/74831949991.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/jovorurog.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/kafiwafuxipegikeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/tisikezaxadosupabunibox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3708/files/movoxamunamanomup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevadijuxirefasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/44325571111.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/mexenojiboxexomejomufo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/xukonekaxakalasisovin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32505595602.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/
    • https://cdn.shopify.com/s/files/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e2b.bin
16ccb5ba1d5c490c356253e4f6a90b4d4383748123c45f64b342291385614030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2B 5144 bytes
font_01_sfnt_off00007fba.bin
834f554936a7ce48e7c774997d77a2f1f1762f12370b385cf977cc3c1db06eb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBA 10648 bytes

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