Malicious PDF — malware analysis report

Static analysis result for SHA-256 7668d0f5a89d5e00…

MALICIOUS

PDF

48.6 KB Created: 2020-08-12 00:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1627375668dc16f835640bc62c9a90d9 SHA-1: 6ecea8ee9fe186339eadc35f1ee4658e65dffbc6 SHA-256: 7668d0f5a89d5e0007f75b62cbbc190016e573b9f7d827192fbdc678a18e7114
154 Risk Score

Malware Insights

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

This PDF document contains a high number of embedded links, many of which point to a redirector infrastructure. The primary malicious link identified is https://ttraff.com/pify?keyword=maria+montessori+education+and+peace+pdf, which is flagged as a known malicious redirector. The document's structure and link farm suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.com/pify?keyword=maria+montessori+education+and+peace+pdf
    • http://files.playtherapyworks.com/uploads/1/3/1/4/131414743/pofukabexi.pdf
    • http://sujoxenej.burbankbees.com/uploads/1/3/0/9/130969060/vipedokax.pdf
    • http://files.openwindowdesigns.com/uploads/1/3/1/3/131380666/sufelilazad.pdf
    • http://files.mccombwholesale.com/uploads/1/3/0/7/130738679/4286486.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0451/6030/0698/files/42915296479.pdf
    • https://cdn.shopify.com/s/files/1/0433/2525/9944/files/fiximaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/wivezurimulitolevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/vizisag.pdf
    • https://cdn.shopify.com/s/files/1/0438/9873/2696/files/80743226212.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3333/files/widusasezivizigimulagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/xuvizavofabajak.pdf
    • https://cdn.shopify.com/s/files/1/0437/3856/2712/files/xeroj.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/vagufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/wewawopuviduzedi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/lugawawasemakoluvuroz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/negurajenifuxegesine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000684a.bin
6a9de5166d5ee60266cce7b641560c83b82ec8a47417b6ce5a26005637147dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684A 5156 bytes
font_01_sfnt_off000079b4.bin
c4dc4cd27ef918f7b5da667c79f3b462ed1646d9c1939a100c279bd50855d82c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 14340 bytes
font_02_sfnt_off0000a6c4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C4 4324 bytes

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