Malicious PDF — malware analysis report

Static analysis result for SHA-256 102e9468a6b5327f…

MALICIOUS

PDF

36.0 KB Created: 2020-08-31 21:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75c63416081676c13254584ec963eeb7 SHA-1: 82279f0ec1b444c0640004f22c6c56e555fa7b87 SHA-256: 102e9468a6b5327fd8eab0c280e0d072d7e05ba2813dd96376e0339a30b79487
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to movie songs and the URL itself, suggesting a lure to trick users into clicking malicious links. 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.com/wix?keyword=agneepath+movie+all+songs+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/238140_bb8b431ca1c8486eaca8fb79f69fc9a4.pdf
    • https://static.usrfiles.com/ugd/0df15e_4448b7267ce14bb6b6c4ef9ca8c9e383.pdf
    • https://static.usrfiles.com/ugd/63d3ad_16548c54ea0143039499a491a95af63e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2e86cd413ae45dab10e03ad0104040a.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/setup_local_web_server.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/36346453792.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3396/files/vigapus.pdf
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/44884643945.pdf
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/pikeror.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/apache_tomcat_user_guide.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_off00004302.bin
ea3f9fda8e219d02d54543cdb0abd39c692c704c667b539cbbb704761f2bc60a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4302 5152 bytes
font_01_sfnt_off0000545c.bin
0c681905ce76e7697d602236bec8e0ef2f852e540225544eced713935628263a
pdf-font-stream PDF embedded font (sfnt) at offset 0x545C 9692 bytes
font_02_sfnt_off00007583.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7583 4324 bytes