Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6013da2d7fc4b0…

MALICIOUS

PDF

86.7 KB Created: 2020-07-30 08:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72dafba342222c73a65cb9f7792b9190 SHA-1: 7041563fe6a22f7d0a52218f0ad829132d6acee3 SHA-256: 1d6013da2d7fc4b07ac96954c45fe8393a5ce478737d88813927f4ad886f4a76
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of the primary links points to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'Holy bible hebrew english translation pdf' and mentions the wkhtmltopdf application, suggesting a lure to disguise the malicious intent. The embedded links likely serve to direct users to malicious sites or to manipulate search engine results.

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.com/pify?keyword=holy+bible+hebrew+english+translation+pdf
    • http://files.redmondmathblog.com/uploads/1/3/2/3/132302923/8512698.pdf
    • http://files.joshklemons.com/uploads/1/3/2/7/132740743/pemawinom_bozuzike.pdf
    • http://files.dovergreekfestival.com/uploads/1/3/1/8/131871518/19385.pdf
    • http://files.tottieaarvold.com/uploads/1/3/0/7/130775640/xitimererasupop.pdf
    • http://files.buffalohorticulture.com/uploads/1/3/0/8/130814245/mefupizulu-fizokuwodarade-kepadudarumet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3282/files/wuromurutulosadenazuti.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/jujevofewewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/99307664260.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomuburisuxenogiduta.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/dekogivemofuwipukego.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/12186340651.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/77201221779.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/gedalufemuwelejes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/60137889802.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/xalepuvapi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3996/2774/files/20991950928.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/sakis.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca8.bin
d0763fbd271711262b0a26362cc9c99fb155632731fabfacbbfc72efdb3f7c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA8 2912 bytes
font_01_sfnt_off0000f70b.bin
38a47e36862110b4ca7a4c106a9747be4de00323fbd5e8da58c48342e894bf25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 5388 bytes
font_02_sfnt_off00010957.bin
b42f2b1d9b9768bfc02a12059f5367065cf6b2ec507aeb1e331bceec42ba939d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10957 1796 bytes
font_03_sfnt_off00011248.bin
962047c0b9cbbdaf809e037d3409eb91866d566f876af07436359fb6f33c5929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11248 10644 bytes
font_04_sfnt_off00013624.bin
b11862f87c5a27a1ca59775c282d40e2daa9d04d2271fac911bd82270a6dd973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13624 16196 bytes

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