Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef660f75b7bea079…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 16:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0684aef3c5aba1304982fbdaf6ec9c3b SHA-1: 4292f5ae815799e4ef604a453187fa392c3b559b SHA-256: ef660f75b7bea0799a40d2d8552e9edf19b681342fb2a52578184138923ab455
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also assigned a very high probability of maliciousness. The document body contains a URL that points to a known malicious redirector, likely intended to lure users into clicking through to a compromised site. The presence of numerous embedded links, many pointing to Shopify domains but also including suspicious custom domains, suggests a broad distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=tracheostomy+care+video
    • http://mabod.cityreachswissvale.org/uploads/1/3/1/4/131437502/8650411.pdf
    • http://nubise.ksonstruck.com/uploads/1/3/0/8/130813694/maramanedot-filozo-mufipeteke-rosiveg.pdf
    • http://files.stitchesbylynsey.com/uploads/1/3/0/7/130738499/7513939f.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/quicksort_median_of_three.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/89402534875.pdf
    • https://cdn.shopify.com/s/files/1/0437/5429/1354/files/business_model_generation_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3126/files/16_point_compass_directions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3119/1975/files/bibonofos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/guide_to_getting_it_on.pdf
    • https://cdn.shopify.com/s/files/1/0433/0894/1467/files/pathfinder_beginner_box.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7369/files/31030878996.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_off000062d4.bin
c9f8fd1d56dcfda814c8ae5f988632296a630f89c403a15a67dca5c2765f7a3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 5256 bytes
font_01_sfnt_off00007494.bin
f6a4eebeedf01692ccdf09d0545d9717733582abd1eb6109115f6d84550225a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7494 10272 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.