Malicious PDF — malware analysis report

Static analysis result for SHA-256 e048a6c3f263a3ba…

MALICIOUS

PDF

46.7 KB Created: 2020-07-18 20:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c95cb356e0799410c9ae8d7b2adbba5 SHA-1: 6073c876bd5b74d2bf3c1162e2190834bed9605b SHA-256: e048a6c3f263a3baa5bc24ce6885e7656746bb375f790885f7d90a87ee511871
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'oracle ebs interview questions pdf'. The primary attack vector involves tricking the user into clicking a link that leads to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wb?keyword=oracle%20ebs%20interview%20questions%20pdf
    • http://files.alex-chien.com/uploads/1/3/1/6/131606268/8618474.pdf
    • http://files.athenskey.com/uploads/1/3/1/4/131453735/zovedum.pdf
    • http://files.coleman4wcsb.com/uploads/1/3/2/6/132682819/sawagigu.pdf
    • http://files.fiawashburn.org/uploads/1/3/1/0/131070491/xatubodif.pdf
    • http://files.kirkbeeler.com/uploads/1/3/1/3/131381706/zevalisigo.pdf
    • http://files.devizesphab.co.uk/uploads/1/3/0/7/130776046/najukezoneb_zewuxemikafid_litusemukunila_zesitesusemag.pdf
    • http://files.hiddenacredanes.com/uploads/1/3/2/6/132696351/sivofevazadozo-fufojobag-xozamaluwekuj.pdf
    • http://files.tatibevilacqua.com/uploads/1/3/1/4/131453897/4584805.pdf
    • http://files.tatibevilac
    • https://tokisize.files.wordpress.com/2020/06/woninukesuvumomu.pdf
    • https://xodilufuva.files.wordpress.com/2020/06/ziwupegepebusapixu.pdf
    • https://zegivebef.files.wordpress.com/2020/07/fufuwom.pdf
    • https://jizamegiwona.files.wordpress.com/2020/06/folawipaziwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagitigupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/57732345233.pdf
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/tenaxosojusarivivukefeji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9099/2549/files/teziropuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40323832667.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mirogorozizodixomalejog.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/6395846813.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/rujuzivixurisu.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_off000077a1.bin
7f55d3fd8bb912dd861193aaa3b883f3fd638e1f43be215ba3a394d36c0a77db
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 5476 bytes
font_01_sfnt_off00008a52.bin
baac39a90fa1a33604b5276251cc576529b742a18fdfdfecfb5901c002c2248b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A52 10356 bytes