Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf80c48d41b3ace…

MALICIOUS

PDF

47.0 KB Created: 2020-08-06 04:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c09b4dac8c597bb598c22782963059a SHA-1: f8e4054c4f3be1365fcf31b15d3d0bdf7cb6aea3 SHA-256: bcf80c48d41b3ace254ef2d83f1564ad0396a3fe226e6f83bf2576d1773f4870
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, masquerading as a guide for using VLOOKUP in Excel. One of these links, 'https://ttraff.com/pify?keyword=how+to+use+vlookup+in+excel+step+by+step+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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=how+to+use+vlookup+in+excel+step+by+step+pdf
    • http://files.iphonerepair-inlosangeles.com/uploads/1/3/1/4/131455463/5816b826bd111.pdf
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdf
    • http://files.afcitypark.com/uploads/1/3/1/3/131398424/befa22773eae.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/poxifelixokivilune.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/judopuniwaluxapaxamuziju.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/2717051456.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/visawirozepimufoke.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/31810513724.pdf
    • https://cdn.shopify.com/s/files/1/0434/2045/0972/files/gubimubodol.pdf
    • https://cdn.shopify.com/s/files/1/0436/7391/1449/files/hot_coffee_mod.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/time4learning_coupon_code.pdf
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/72475861501.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/kupudovagozivonetab.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/47831050273.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_off000077b7.bin
03288d3e398fea256c3104eb5b1172026b3c11f2678a4ea2ed4772a8099302e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B7 5332 bytes
font_01_sfnt_off00008a0c.bin
29ba458108eb47f9efb6eec14e38b00c9ef7e3f7f0075363f28ce0e4fec46e0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0C 10652 bytes

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