Malicious PDF — malware analysis report

Static analysis result for SHA-256 868c64002237440b…

MALICIOUS

PDF

52.3 KB Created: 2020-08-23 16:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 705a2727e0ba9012e724a89e2102f358 SHA-1: 44c7e6b51d54285dbfd619a81b3dbf4bff9ccccc SHA-256: 868c64002237440b5be8423a0361ddd05e38f6e855ad7b2cad9b93c20f03fa18
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious sites. The document body, though obfuscated, contains text related to 'admin login form' and includes the malicious URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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=admin+login+form+with+database+in+php
    • http://jufololu.sarahjanegriffiths.com/uploads/1/3/0/8/130814172/7803780.pdf
    • http://files.ef-gsm.co.za/uploads/1/3/1/3/131397940/7974759.pdf
    • http://wetev.care.coach/uploads/1/3/0/7/130776167/8f21ac.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/batapefuvubuwowewedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/12563790648.pdf
    • https://cdn.shopify.com/s/files/1/0449/5376/3999/files/56549089127.pdf
    • https://cdn.shopify.com/s/files/1/0437/6802/1141/files/brawl_stars_hack_mod_apk_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/kexox.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/23519629287.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/farrah_abraham_back_door_superstar.pdf
    • https://cdn.shopify.com/s/files/1/0434/2988/8161/files/grounding_techniques_for_ptsd_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/menoloberapokudorikux.pdf
    • https://cdn.shopify.com/s/files/1/0436/2895/3763/files/53745344360.pdf
    • https://cdn.shopify.com/s/files/1/0455/4991/2229/files/somuka.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ec4.bin
8783f9c007bb135c6fc731f8eb0c96379f1bb3a994d691e1feeb1e3dc09e82b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC4 5676 bytes
font_01_sfnt_off000091ed.bin
3e46fb138c36df5aac50d963e73a1806b9f19ff5472ed871feb7b1b94ef76645
pdf-font-stream PDF embedded font (sfnt) at offset 0x91ED 16192 bytes