Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace363f905affc9d…

MALICIOUS

PDF

38.4 KB Created: 2020-08-05 11:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc28782d8dc923ad3cdaa6b4e4ff759 SHA-1: 124991c76fa58c9638b25083ae34997a97b9d221 SHA-256: ace363f905affc9df2a67ade55e2c818fc83a510461722e1974602692664324d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body text, though partially corrupted, mentions "Red cross bls handbook pdf" and includes the primary malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent of driving traffic to potentially harmful content.

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.ru/pify?keyword=red+cross+bls+handbook+pdf
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdf
    • http://files.fhwellness-ca.com/uploads/1/3/2/3/132303083/kuvedubulowe_kojolagitikaf.pdf
    • http://kitepuro.ourpeaherpod.com/uploads/1/3/1/4/131407469/sariruvusarib.pdf
    • http://files.team2834.com/uploads/1/3/0/7/130776518/kudopomizofuxuxik.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/nuvaguzajazipitulemulo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/tumagedituvurudorukozege.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/navy_seal_workout_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/51374790035.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/40469404339.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4583/files/21040383315.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/gupivalowolafudepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/buvavaxaburiwurumowis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/lista_de_alimentos_ricos_em_proteinas.pdf
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/sodud.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_off0000585f.bin
cc4d0382781768c25a37ee25833f361d5034edde2b600ef0b3b0f5ec980afe64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x585F 5452 bytes
font_01_sfnt_off00006ade.bin
9196dff954e8490c4be6606eee9fd6a7c5b7c5ec40436f1c28dad6ebb2fb1df9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADE 9896 bytes

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