Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ac15342c8ae00f…

MALICIOUS

PDF

55.3 KB Created: 2020-08-05 01:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cef95cfec1e1bde584413bea73d61c4 SHA-1: 06953265f35d43197b66fde1fde38fc97236d3da SHA-256: 19ac15342c8ae00f5cdfdbd20a4389be10a667672677428ef9af5bb79cd1121a
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=pan+enteral+adalah+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other links that appear to be part of a link farm designed to lure users to malicious content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/pify?keyword=pan+enteral+adalah+pdf
    • http://files.pascalab.org/uploads/1/3/2/7/132740541/sutenamurot.pdf
    • http://files.shanereidcontracting.com/uploads/1/3/1/0/131069763/tezatuvevik.pdf
    • http://xorovu.inlandempireinjurylaw.com/uploads/1/3/0/9/130969045/1175874.pdf
    • http://files.ssjohnpaulfaithformation.org/uploads/1/3/0/9/130969820/biwitakanavow.pdf
    • http://wevek.tamarawolfson.com/uploads/1/3/1/4/131453494/7262258.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/zobuzavepikorutogup.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/80817375434.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/54017561398.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/41094940945.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/genozov.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/43321945681.pdf
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/zajesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/craigslist_org_el_paso.pdf
    • https://cdn.shopify.com/s/files/1/0429/8054/0575/files/puvowujajibatafex.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/duzid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6644/1376/files/dodufugozofiwujofakofeme.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/vekisikokozo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/laxotozunin.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080cd.bin
6106ba75a70c4deff08acd2bf1f695cf468ca605645b215ffdb3666cdacd63ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80CD 4952 bytes
font_01_sfnt_off00009191.bin
1744a406d07f61e2a6be067382520157b6ff5c89f283dcf3ad2af83208d8f76c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 9000 bytes
font_02_sfnt_off0000aacb.bin
59aecc34237f025ebe01092175f2c649b1e59d05487ca4be7af6ddebe747decf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAACB 10272 bytes

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