Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c5f5f36c40f7a7…

MALICIOUS

PDF

42.6 KB Created: 2020-08-02 10:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 32ac8480eeb5459f579ea45103596cb8 SHA-1: bdfc6e11076b0e0fa4460e9d89d9b061846a3284 SHA-256: 93c5f5f36c40f7a7d5b2cd1da4e0da6e44fde24d8cc3bf604b8c63aa448e97cb
194 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 known for malicious activity. The 'SE_CLICKFIX' heuristic indicates the document may also attempt to trick users into executing commands. The presence of numerous PDF links suggests a link farm or redirection strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=java+binary+se+not+responding In PDF document text
    • http://files.jportillollc.com/uploads/1/3/1/4/131453598/xomomiwisezoge.pdfIn PDF document text
    • http://files.clarecaldwellartworks.com/uploads/1/3/0/8/130873849/d5ff71e8.pdfIn PDF document text
    • http://files.gmgtravel.com/uploads/1/3/1/6/131607827/faxobosowanakeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0568/1557/files/kupugixejuxadusixeselepof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/18013232226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/mimudabexuwukaxilet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/82545044280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/lynnfield_ma_zip_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/kuveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/vilukerodevotani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/gutaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/sipolufosivamaxobugez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8E 5172 bytes
SHA-256: 5a4f6d23da27b270a70c32eb12adb8c9c930345b7625cf1fc65d768d5864081e
font_01_sfnt_off00006c31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C31 10468 bytes
SHA-256: c22ca8e209807341718db4ccbe6c8a0c56a7161a8fe90bbdfcddb9c2c169c826
font_02_sfnt_off00008fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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