Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcc94ae4860f0d5…

MALICIOUS

PDF

42.0 KB Created: 2020-07-09 23:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34a68ffc35d62890ab08b956fa82cf6e SHA-1: cb8c19b8b9f7d5def7ba3ee18d37d6a1a6cef5eb SHA-256: 5bcc94ae4860f0d57327e55d2e7089470a2912442688755a9d264738491f4039
154 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as a 'Dianetics pdf download' lure, but they redirect to malicious infrastructure. The primary link directs to `https://ttraff.com/wb?keyword=dianetics%20pdf%20download`, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains embedded URLs that form a link farm, likely for SEO poisoning or to distribute further malicious content.

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/wb?keyword=dianetics%20pdf%20download
    • http://files.creeksideband.com/uploads/1/3/1/3/131384789/3301404.pdf
    • http://files.ddeacademy.com/uploads/1/3/1/8/131857476/55737269.pdf
    • http://files.mtviewcrc.org/uploads/1/3/1/8/131871515/dofebekuwosuxoka.pdf
    • http://files.annegreenwood.net/uploads/1/3/1/8/131871727/lirufujuj_nuzamadaloz.pdf
    • http://files.wheatgrasspublishing.com/uploads/1/3/2/7/132741181/ade259.pdf
    • http://files.development12508.com/uploads/1/3/1/6/131607522/vipine.pdf
    • http://files.signsbytran.com/uploads/1/3/2/6/132682639/2979009.pdf
    • http://files.storybookdelivery.com/uploads/1/3/1/4/131437636/1090280.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • http://files.aprilnieves.com/uploads/1/3/1/6/131606673/ca82f04a3.pdf
    • http://files.mountainspilates.com/uploads/1/3/1/3/131383977/farew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://wiraluzijor.files.wordpress.com/2020/07/susowun.pdf
    • https://sedubotega.files.wordpress.com/2020/07/lupafodopikubole.pdf
    • https://mijawodemim.files.wordpress.com/2020/06/dolipibanoloderinoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kipisoluni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tutokufumetuja.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_off000067b7.bin
cc1d24143e2175d8a3799a92f34dca0cf3cc5b97613f0aadac1ce866674b6109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 4932 bytes
font_01_sfnt_off000078a7.bin
c9d1d19893ca7dfd4482a1953ef5fb80f061ef5a1b7fb9d4b8818d84ec6ec765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 10088 bytes

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