Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7267ea0a3b9fac8…

MALICIOUS

PDF

60.8 KB Created: 2020-07-16 21:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ef3332ffd0b2f9144fad3c6f980171b SHA-1: bfbbf570943a359088ae2c3d00d7c7878580408a SHA-256: d7267ea0a3b9fac8b08056e898b9634fef0c34624e5d6801d91aca8a891c5a78
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wb?keyword=white%20noise%20full%20book%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links. The document body, though heavily obfuscated, suggests a lure related to a 'book pdf'. These factors indicate the primary intent is to redirect users to malicious infrastructure, likely for phishing or further malware delivery.

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/wb?keyword=white%20noise%20full%20book%20pdf
    • http://files.heroesbnb.com/uploads/1/3/0/7/130776812/782c598c7.pdf
    • http://files.joshamayo.com/uploads/1/3/1/4/131452867/3ddd99b4fecd.pdf
    • http://files.sacketschamber.com/uploads/1/3/1/4/131438582/xeronur-gosutateziduk-busitib-vagatas.pdf
    • http://files.verduemedia.com/uploads/1/3/1/8/131871859/fujigagudutujotez.pdf
    • http://files.verduemedia.com/uploads/1/3/1/8
    • https://fijimisu.files.wordpress.com/2020/06/kepalob.pdf
    • https://jefunalas.files.wordpress.com/2020/07/vularefitipojofixem.pdf
    • https://xejolaxutibu.files.wordpress.com/2020/06/74663044587.pdf
    • https://japirugalad.files.wordpress.com/2020/07/42571509364.pdf
    • https://wabufalij.files.wordpress.com/2020/07/87591381828.pdf
    • https://nalibavur.files.wordpress.com/2020/06/gezerovosub.pdf
    • https://juxisaw.files.wordpress.com/2020/06/66823245803.pdf
    • https://rerazudo.files.wordpress.com/2020/06/7298163179.pdf
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/fowikebepexazetedelunala.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/96208573515.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/62303589708.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/97144144638.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wugituvunajobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/xaziporimiwenakuka.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5959/files/xizurobuwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/5261093395.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/risesatarofelepikovopa.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_off0000b1b8.bin
4802e18480cec34bfcb3a1d27b9a4b931be4ddcfab8aac469f08f718e139b956
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B8 4920 bytes
font_01_sfnt_off0000c275.bin
45cf26359a111587c100d00be800554f64c2db0d3362de6387636bb4c34fa691
pdf-font-stream PDF embedded font (sfnt) at offset 0xC275 10392 bytes