Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9d7755d59f6e17…

MALICIOUS

PDF

52.2 KB Created: 2020-08-21 02:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fd627e8481e732b97135615e6a09fab SHA-1: ceb5e987bdc5f6495948d8977d6f8a7a3ad5620c SHA-256: ee9d7755d59f6e17d2556b36a0901365416a65226e3c2c71ae070a756d69be9f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sejarah+karate+di+indonesia+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated but contains the redirector URL, suggesting the primary intent is to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=sejarah+karate+di+indonesia+pdf
    • http://files.fireflies-and-blossoms.com/uploads/1/3/1/3/131380944/bamopa_kufamasoperodes_damixamena_nusixis.pdf
    • http://files.alamosavalleyhumaneleague.org/uploads/1/3/1/3/131383791/10af04.pdf
    • http://siboval.gregbenken.com/uploads/1/3/1/3/131379803/vojube_kobejegef_wunamo.pdf
    • http://nopewewux.makeandmendsomerville.com/uploads/1/3/1/6/131636777/c370e9231.pdf
    • http://nazuk.jjbeef.com/uploads/1/3/1/6/131637459/1595943.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/basic_fundamental_of_electrical_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/ridixerotarapoleb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/judubipurajupevidese.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/63309574246.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/60501931172.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/mepafevunomarinalaxupuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/paxudose.pdf
    • https://cdn.shopify.com/s/files/1/0429/2247/5687/files/fixakabaseviwa.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/round_down_python.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082dd.bin
813267de4793aeebe9cfd3baecab672f6108fc23d0ac8987b29a8ecbd5db8890
pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 3196 bytes
font_01_sfnt_off00008e23.bin
daf23829c2779287fa389440a92c870ed23d4b7b86564f6f87203d3a67685159
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E23 5340 bytes
font_02_sfnt_off0000a049.bin
9fcef735d85d64a40656857618dad0d947ff519fe015b10230e06a3ae058319e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA049 10436 bytes