Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc0233e4a4b3152…

MALICIOUS

PDF

48.0 KB Created: 2020-08-15 02:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa40f3b1afcfab9a8ad59d8880c4c838 SHA-1: 3a1effac4da5bd4a53999fb302cdd0ce8b4f06bd SHA-256: dcc0233e4a4b3152b9c2b01a0aa45a6e5a36dcc1db7dad63ac707eb0e29c6125
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests an urgency lure. The presence of a link farm indicates an attempt to distribute malicious content widely. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bnp+mf+stp+form
    • http://bumigow.capitalexpenditures.net/uploads/1/3/0/9/130969317/ed45296f.pdf
    • http://dutinoxol.sasquatchsyndicate.com/uploads/1/3/1/3/131398540/xanusasexezirar.pdf
    • http://buxelat.mirjamaigner.com/uploads/1/3/2/8/132814930/bibimudapab.pdf
    • https://cdn.shopify.com/s/files/1/0447/1390/2234/files/xowusumigofelase.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/74048985284.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/kitomolebowadumikuwibunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/66799756871.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/sopililirasetijefojizesov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/63890166566.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_off00007e4e.bin
c4b09f3893d34b4414f62d314c844c1303495dc71a0dbe30c03ffd8b6da3ab3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4E 4852 bytes
font_01_sfnt_off00008eb5.bin
8370abbc9da03c0e026df3ead54158b17ca65cb956d1221c7ea291d838fc3588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB5 10792 bytes

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