Malicious PDF — malware analysis report

Static analysis result for SHA-256 4515d23557ed3f4f…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 07:34:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0194a98f65d4826e518b7cf3d6bb3f SHA-1: 548063a4e72a9215ed40ef49dcf5bfac6898b230 SHA-256: 4515d23557ed3f4fbfce5e3e177a77bafc930e9193e5b78399f1b35117e75aa3
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=strategic+supply+chain+management+books+pdf', which is a known malicious redirector. This suggests the document's primary purpose is to redirect the user to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=strategic+supply+chain+management+books+pdf
    • http://files.imarsonline.com/uploads/1/3/1/3/131380413/6c76ebc2.pdf
    • http://files.holisticways.com.au/uploads/1/3/0/7/130775182/mimosob.pdf
    • http://files.learningforlittlepeoplepreschool.com/uploads/1/3/1/6/131606392/eb08ac245ae3ac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41697505155.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/xuwikewen.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/zutakupusitumeluzewuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8247/1837/files/kolelanikad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/4261437521.pdf
    • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/kexawuzizosawamevulap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/wedepusesedaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/dewutomexivuxorajudo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/57686955036.pdf
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/53622856841.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_off00006b66.bin
ca1a2f2ebac32684570b860edc9799bbd1cb5116e7ab7b2586e63087697a4499		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 5980 bytes
font_01_sfnt_off00007f9e.bin
3297fd47bc423b81e199ac5a772817552b128c6f914e4273c38d7581f1405371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9E 9728 bytes

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