Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2e64ac9d322a32…

MALICIOUS

PDF

42.9 KB Created: 2020-08-05 15:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70482e4a5d22e9e2180a9ee1527a8342 SHA-1: 28f1a3a05dd7c543851abaf0e92c5fcf1bee8696 SHA-256: fd2e64ac9d322a327a0680591208acf53fabc7d7b121c1ccd43961111668dc0e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'List of adjectives pdf' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of a malicious redirector link is the primary indicator of malicious intent.

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=list+of+adjectives+pdf
    • http://files.line-arrays.com/uploads/1/3/2/3/132302926/1190470.pdf
    • http://files.catalog.koehlerscale.com/uploads/1/3/0/7/130775758/5123692.pdf
    • http://files.abstractgames.org/uploads/1/3/0/9/130969151/nenikutuvo-zipiso-kedipun.pdf
    • http://files.faumconline.net/uploads/1/3/2/8/132814544/3061338.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/savam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5181/files/7854269269.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/highway_78_accident_today_pa.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/24647691911.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/13355424302.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/vefuder.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/depimexipegurizowabowul.pdf
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/90711578586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73881495537.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/5713000701.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/92300033526.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/linked_list_destructor.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/50109537844.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_off000061bc.bin
b4faf7798ac60413f40efa8d1b9f0b16628f274c0238a034a41f99a659dff6f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5100 bytes
font_01_sfnt_off00007345.bin
a673463a1c552295ef8f0968862feaa288f94a5cdc4a117337153cccced4220b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7345 13988 bytes

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