Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c53cc6f720526a8…

MALICIOUS

PDF

38.9 KB Created: 2020-08-29 19:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0197bfe0d72699e5508415540bed6d8 SHA-1: 943d5777e63880c620f811513be35766957e0c0c SHA-256: 7c53cc6f720526a824a5d55d1a25193d6ae5f10bf271af822a709079b54ec4c3
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/wix?keyword=rca+universal+remote+codes+for+digital+stream+converter+box, is designed to appear as a search result, likely to trick users into clicking through to a malicious site. The document body, though heavily obfuscated, contains references to remote control codes, aligning with the lure. No scripts were extracted, but the presence of many external PDF links suggests a link farm or redirection strategy.

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=rca+universal+remote+codes+for+digital+stream+converter+box In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_66c63703024c45c3942bc6ac7713b1aa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5838c8f1798b4f7faba07b119040f1ba.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33a16d_44308bf26af942dc9873ce7e9f4eaf0d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_12985fe92d964c679b808b2fc07d15e6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5f31b2a80a054df8908eca6fa25b7a16.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_18bc8464f9ef4af48d13f7d672f6a8ec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_43597533810547daa7ba4c2ad732d0a5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/wizuwojalitenij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/88783691927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0995/0367/files/96381167728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/muscle_size_gain_workout_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/sogejuxuv.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058c0.bin
abb1095c1fc65cbf6f6c7b3a7ede88d130fe07a73cb77df641ffaa097e457a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C0 5616 bytes
font_01_sfnt_off00006bd0.bin
dea21d9996a60e3639e1d8e3dd2c89452ff9933cd555f548388952dd0dd9e1b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD0 10376 bytes

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