Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c348fbabf3c105…

MALICIOUS

PDF

56.5 KB Created: 2020-08-01 16:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71bafed1753611d43de0dbc2f2adf011 SHA-1: 80aba8b617856a3a190caaf9d2337c041658021c SHA-256: e3c348fbabf3c1053e44d4ce4d07c23b53879cddefadefe87bf45f52a29c9a69
128 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, constituting a link farm designed to direct users to various external resources. One of these links points to a known malicious redirector, indicating a potential phishing or malware distribution attempt. The presence of a 'download button' heuristic further suggests a lure to download malicious content. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=jvc+kd-+sr41
    • http://files.bluetarotshop.com/uploads/1/3/0/7/130776590/botovunijotitev.pdf
    • http://files.themobilemechanicraleighnc.com/uploads/1/3/1/6/131607053/5151734.pdf
    • http://files.beritgehrke.com/uploads/1/3/0/7/130775393/a2f309.pdf
    • https://cdn.shopify.com/s/files/1/0440/7453/3014/files/65736792289.pdf
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/fazuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/0952/2339/files/juwukuzakejiwusipunato.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/48480299291.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/fasave.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27984898694.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/20605047353.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/16979210423.pdf
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/fipeligimotituvuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/71156532143.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/70067019440.pdf
    • https://cdn.shopify.com/s/files/1/0433/1343/0686/files/90133354207.pdf
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/donozinikabupud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/52438662272.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_off0000670f.bin
bfe3dd6acbc12e0fb5bfdea3b97aea24491cb3b46b4532c3cbb5cf96e145fa2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 4304 bytes
font_01_sfnt_off000075b4.bin
645858bcc5e4a8d1229fffdf90ee13bd5bdb8a7e3473fe7bcd334571aec72c47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 3212 bytes
font_02_sfnt_off000082d1.bin
b5c8b96fb71a776b8793210fa531f7fcff19f7a3a0da8207c9ccb530a1192809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D1 14672 bytes
font_03_sfnt_off0000b101.bin
22e0f7f5131eb49a976814854cd63348a9587a1cc3fce1cca4c4ad5f0dda1771		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB101 16268 bytes
font_04_sfnt_off0000c667.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC667 4324 bytes

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