Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5bdf53e6278065…

MALICIOUS

PDF

35.5 KB Created: 2020-08-23 15:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 878f62b20ecbe61ab82d367accfd623f SHA-1: b0cdebdba9624a848162e715352eed656bccfeea SHA-256: 3d5bdf53e6278065ac10891924a47491d221825123b9e4d71b89a74af91f5952
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=cocoonababy+nest+fitted+sheet', is flagged as a known malicious redirector. The document body is heavily obfuscated and appears to be generated content, further supporting the SEO manipulation or redirection attack pattern. 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=cocoonababy+nest+fitted+sheet
    • http://rorogeloz.southerncountrykennels.com/uploads/1/3/0/8/130814328/6594c.pdf
    • http://files.haroutioun-derderian.com/uploads/1/3/1/3/131398424/c08560.pdf
    • http://files.bassreevesconference.com/uploads/1/3/0/7/130776864/eac8b0e01878a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/fijunebadize.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/red_trofica.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/cibil_and_bgv_consent_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/6400/8605/files/rurejajusavekuder.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/cemento_dental.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/fetch_api_post.pdf
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/mogukugexegadati.pdf
    • https://cdn.shopify.com/s/files/1/0438/2729/8461/files/50289338835.pdf
    • https://cdn.shopify.com/s/files/1/0464/8425/8984/files/bullet_raja_film_hd.pdf
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/63621129528.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/comparative_superlative_exercises_elementary.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/32705149350.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_off00004bd4.bin
2bbfcf65be69f33045013fb72fda3ff67639c619c3e3c1f7daeebab45e378565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD4 5128 bytes
font_01_sfnt_off00005d3a.bin
d3c2ffd4b615e72955816c3d66f5b286e7f7e715505c11b81c455ff00553e914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3A 10620 bytes

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