Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ba403c37a53699…

MALICIOUS

PDF

41.6 KB Created: 2020-09-11 06:14:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a5767083342a14d635b8c5feb737750 SHA-1: 2031f958970bb3056f7b9fffd86318282b6c44ad SHA-256: 68ba403c37a536993b760a449ecafaaa4ec45dee4ecc0f28887d3e6947d957cb
174 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, masquerading as a QR code scanner lure. The ML classifier strongly indicates maliciousness, and the PDF is flagged for linking to known malicious redirectors. While no scripts were extracted, the embedded URL and the nature of the lure suggest a phishing attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.me/wix?keyword=android+qr+scanner+front+camera
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9edd50_9dfe9536d4ae480a878b9c26a554b241.pdf
    • https://static.usrfiles.com/ugd/ee6100_ca876186b5bc4d3783d9d34f71348fcc.pdf
    • https://static.usrfiles.com/ugd/22bf55_d8000e45ddf64e99bd74b4aaf4961c38.pdf
    • https://static.usrfiles.com/ugd/26938b_16a0d5bc4b5740aa897943e8977722d7.pdf
    • https://static.usrfiles.com/ugd/a01749_16606abef6db4742a83118ab6859ef72.pdf
    • https://static.usrfiles.com/ugd/b65acf_8c442985c81949ca825dd1b3e46d2dbd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/penalekunolalamudi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikodizexosuva.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/gudigebefadenuzowewigax.pdf
    • https://cdn.shopify.com/s/files/1/0429/4003/9324/files/ronoduravowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/construye_un_imperio_brian_carruther.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/public_administration_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/66221094055.pdf
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/toluvapopigodadasej.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_off000063e7.bin
1af085ce6c40c7ce363c902eb5d97b3ecc60defbbbab8306f5663dd158f34d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E7 5252 bytes
font_01_sfnt_off000075b1.bin
e2a600ba61dc0c376351fe2d4d0783eef4eaf5e3e5f782af63cbe8deac6baf5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B1 10400 bytes

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