Malicious PDF — malware analysis report

Static analysis result for SHA-256 5535ea9506ddff82…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 23:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b77bd57276bf66c6472441b69efd7b8 SHA-1: f0e6a3f2452547c4211a53a04c1957f257c52223 SHA-256: 5535ea9506ddff82f47b9ded686c021f944b529b0df2432fe8031f64fd6bde1d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a marketing template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many hosted on Shopify, likely to obscure the malicious destination. No scripts were extracted, but the presence of a malicious redirector and the document's deceptive content strongly suggest a phishing or malware 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.cc/pify?keyword=social+media+marketing+strategy+template+2019
    • http://files.livarnold.com/uploads/1/3/1/3/131397934/kikizivafavaxotosi.pdf
    • http://files.coconutcafebz.com/uploads/1/3/1/4/131438419/8691913.pdf
    • http://files.sagercreekmarina.com/uploads/1/3/1/6/131637714/fujik.pdf
    • https://cdn.shopify.com/s/files/1/0439/3939/7790/files/curso_de_apicultura.pdf
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/zamerogog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/bupijuguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/wufotileduparanaki.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6757/files/nifuwutopilulevedinusof.pdf
    • https://cdn.shopify.com/s/files/1/0449/4819/3439/files/microplate_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/fubepizavotubeluke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/tazobutol.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/speak_now_2_workbook_free_download.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_off0000844b.bin
a4b080c95e81100e0c7bf0f13ed0b0ca9d52a1868c8b15bc694504dee9336d6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x844B 6144 bytes
font_01_sfnt_off0000991d.bin
1bdcb3c8aa8a49088613ca7f21953b3dc36eae2168134cb16e1e320dc5676bbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991D 10412 bytes

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