Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f39d415b7a4c8c8…

MALICIOUS

PDF

46.1 KB Created: 2020-08-11 04:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 413e33e0c77943a5c1dbaf7171296583 SHA-1: f94d9ec003cdb0eee536cbecd0295de0958b9e8e SHA-256: 7f39d415b7a4c8c8d465b23c125b985ed7feb846a1ca5d3342a047eff863ca20
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=hipaa+authorization+to+release+medical+information+form+pdf, is identified as a malicious redirector. The document body, though heavily corrupted, appears to be a lure related to HIPAA forms, intended to trick users into clicking the malicious link. 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.cc/pify?keyword=hipaa+authorization+to+release+medical+information+form+pdf
    • http://tarutemi.davidcainrscp.com/uploads/1/3/0/8/130814179/xoravabikarodokowave.pdf
    • http://files.new-england-marketing.com/uploads/1/3/1/6/131606253/linazodasog_denadakon_kalonezomu.pdf
    • http://ritekorik.ftkingchurch.org/uploads/1/3/1/4/131438641/mosepivuzofo.pdf
    • http://files.ayyamouvement.org/uploads/1/3/0/7/130738993/goturob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufanagapaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8764/2270/files/bradwell_v_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/wefamefedenajafilixazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3894/files/76045777322.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/62392176599.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5694/files/15685216966.pdf
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/20795909720.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/63767293934.pdf
    • https://cdn.shopify.com/s/files/1/0430/2723/4969/files/30496251228.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/posebaz.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_off000075a1.bin
8141276a45e0024045d0ed18f9bb8107adf2509982348ac0ccf5c8cc2a56ddfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A1 5404 bytes
font_01_sfnt_off000087d6.bin
bb3c0dae38a015a6f947520404032186f3f7c2713ba21b29e5d040beae5eb66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D6 10368 bytes

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