Malicious PDF — malware analysis report

Static analysis result for SHA-256 12152e452defc686…

MALICIOUS

PDF

48.8 KB Created: 2020-08-10 05:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc6bbef3e19c6558435993cbd8fb6f1d SHA-1: 66fa53406bbb3469c4cec612dc3baf6ee72fca7c SHA-256: 12152e452defc686f9553c18d4ac9b03747c45469bd9c7d271769a93fb0d817a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, disguised as educational content. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=grade+7+math+review+pdf+ontario
    • http://files.roryoneillschmitt.com/uploads/1/3/0/7/130739922/mavigelidovexifolivu.pdf
    • http://vuribasu.clubdanger.com/uploads/1/3/1/3/131383544/xaduguzevibusi.pdf
    • http://fapujeda.sofiaqin.com/uploads/1/3/1/4/131453574/1838693.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/45742408961.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/applications_of_exponential_and_logarithmic_functions_in_real_life.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/83063599906.pdf
    • https://cdn.shopify.com/s/files/1/0435/6338/4991/files/47765319972.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/546173703.pdf
    • https://cdn.shopify.com/s/files/1/0435/5024/5028/files/zikavoradel.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/cisco_ccna_1_introduction_to_networks.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/14786142167.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/fupem.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/jolag.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/alesis_q49_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/92469583303.pdf
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/jebir.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e7c.bin
62deedb54aaef669db635f4ef87d4bda5d475a8bf20633d6b56d9e4ab12fd410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 6416 bytes
font_01_sfnt_off00007e51.bin
92672528eaa724d924dc8bebbc5a07117fe4c760792563bdc94d985cd16bafdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 5336 bytes
font_02_sfnt_off0000906d.bin
87632d581ceda007de29a8d4c1d26cae127b1e7a949fb1f59667ef18b01fb8b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x906D 11064 bytes

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