Malicious PDF — malware analysis report

Static analysis result for SHA-256 42043f4ac51b720d…

MALICIOUS

PDF

36.1 KB Created: 2020-08-31 00:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9329b4f6b101dd65b1b94ec603493933 SHA-1: 52a9fe39c00a0a24f546e4e449eab33269bccfd1 SHA-256: 42043f4ac51b720d6924b8c0b429574f1aebb7385990e080e2363065b1e56491
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to PDF files hosted on Shopify and static.usrfiles.com. One specific URL, https://ttraff.ru/wix?keyword=t-+fal+grill, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the string "T- fal grill" and the URL, suggesting a lure to a fake product page. No scripts were extracted from this sample.

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/wix?keyword=t-+fal+grill In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/darovosagabizonuwoniga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/denoxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/fipigevolewokugimum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/39764971215.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/74a852_0a75f1e59e304ada9bd4ffaea46868c2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_56d54847a64f4655a2ec39c63baa34b4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/45e30f_f3b325511c4c43bf8352f88b9cf2672f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_86fce33d88d24af9b0187d99524497b9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9ee1c28aca8949a5a4f2c35802287cec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eed56f_1f762b8306cf41c9aa6a8109030e2a23.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d78803_6a45d7587773426eb1f384d897d4b094.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/111c46_3709ee7cb1e14693adb33779f6c3dd12.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1c90dc_bbe5420cca3040629ad097a18081a704.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005211.bin
3950f12bb87e48c53e8455673d041031c419f89f15290e0d5eb6b50a70b88857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5211 4740 bytes
font_01_sfnt_off0000624b.bin
c2658411899452f9e3fb2fa36dbf607c7dcc220d368bd7427811100a95ea6e5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 9948 bytes

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