Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2aefc13945559e…

MALICIOUS

PDF

38.8 KB Created: 2020-08-15 03:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96941a9572ad52300d382ab0382abb33 SHA-1: 57f07329ef63226d5e3768e6c271870af322b584 SHA-256: ea2aefc13945559e729ace1684545cca72d67a09b6ffead31797d4928170b26b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to manipulate search engine results and direct users to potentially harmful sites.

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=boboiboy+galaxy+opening+song
    • http://lusojig.andreavargasportfolio.com/uploads/1/3/1/1/131164110/6732351.pdf
    • http://files.livesportsjunkie.com/uploads/1/3/1/6/131606901/935838.pdf
    • http://durokiset.pittsburghighschoolvocal.org/uploads/1/3/2/8/132814930/losipeniwiren.pdf
    • http://files.lakeshoremiddleschoolpto.org/uploads/1/3/1/4/131407281/9ea54a436.pdf
    • http://files.joreed.net/uploads/1/3/1/0/131070508/zifuri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/alexander_pope_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/2448/1431/files/38956362789.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/90338920413.pdf
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/cannibalism_in_cars.pdf
    • https://cdn.shopify.com/s/files/1/0434/1900/9189/files/alter_ego_1_vk.pdf
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/journal_el_watan_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/72819059750.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/sosagosekozavoxepefunusef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/zoniwedatokivew.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_off00004dc0.bin
ad784931cb91d657f69fc885eb79b060ad267ed74f74568975dc52c6134b56b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC0 4956 bytes
font_01_sfnt_off00005ea7.bin
7a96d690bb92caf96e6ca1f7d558d87bf065f1136797669f76a69672c5d9117b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA7 9820 bytes
font_02_sfnt_off00008077.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8077 4324 bytes

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