Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac217fab9c77bee0…

MALICIOUS

PDF

41.4 KB Created: 2020-08-10 10:38:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 828a0100ae6980427aa722eabacb9478 SHA-1: a710510512fe0142d6905ac47eb7beb64ad4fabf SHA-256: ac217fab9c77bee07c5366fb941642996b32f858b1ac21aab494d79d454f9b2a
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as academic resources, but the primary link redirects to a known malicious redirector. This suggests a phishing or scam attempt to lure users to malicious infrastructure. The document body contains obfuscated text and a URL that is also present in the heuristics, confirming the malicious redirector. No scripts were extracted from this sample.

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/pify?keyword=wastewater+treatment+and+recycling+nptel+pdf
    • http://files.penandlenscollective.com/uploads/1/3/1/6/131637016/dufidemoxaz_vamixuwuvewiwud_rajelela.pdf
    • http://files.hightstownmethodist.org/uploads/1/3/1/1/131164386/2326117.pdf
    • http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdf
    • http://files.matthewhawkeldridge.com/uploads/1/3/1/3/131383607/nasaniramisibe.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wirokole.pdf
    • https://cdn.shopify.com/s/files/1/0453/2423/9003/files/meaning_of_development.pdf
    • https://cdn.shopify.com/s/files/1/0435/0931/7787/files/payroll_management_system_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/falmer_blood_elixir.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/zafopejesukagejasajoxu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5228/4566/files/toluvimujil.pdf
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/pukunimotufeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/70059796579.pdf
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/31464235011.pdf
    • https://cdn.shopify.com/s/files/1/0434/2765/9932/files/kujafobikopewito.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/monexek.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/lazofi.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_off00005fb1.bin
322667f92809e1d3af3c45f61f350ddefead571b3e1828dd098839059a43581a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 5684 bytes
font_01_sfnt_off00007319.bin
202d5accfa85e3bc3efcefc8d1cc3cefc52ea825ff6a3ce1b467ca2f20caaad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 10884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.