Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e3b4fc9b2e7894…

MALICIOUS

PDF

63.6 KB Created: 2020-10-02 03:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 736c7ceea02c3277844799ae778702cb SHA-1: 501f6b447cb246bd34ca9790c7dd31580800ea2e SHA-256: d6e3b4fc9b2e78949d2027e7e8ec2116ac01c2e863338d7b6b75aa1216b8c93e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links, with one identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the identified redirector. This suggests the document's primary purpose is to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/pify?keyword=roadies+xtreme+finale+episode+28 In PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/47472834579.pdfIn PDF document text
    • https://site-1039907.mozfiles.com/files/1039907/javegupovobonakexuxifo.pdfIn PDF document text
    • https://site-1037000.mozfiles.com/files/1037000/57150714503.pdfIn PDF document text
    • https://site-1037135.mozfiles.com/files/1037135/fetove.pdfIn PDF document text
    • http://ketadun.vieparlafoi.com/uploads/1/3/1/3/131384675/8840792.pdfIn PDF document text
    • http://fifino.drvegetableinc.com/uploads/1/3/2/3/132302868/85ad8af17809.pdfIn PDF document text
    • http://waran.middletownfamilypharmacy.com/uploads/1/3/1/6/131606289/texudonokaw_tixemij.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/84695408047.pdfIn PDF document text
    • https://site-1039931.mozfiles.com/files/1039931/zasefudoleweso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1442/1653/files/algebra_2_glencoe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/pigepuradagejegig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1485/1240/files/rizuwisutokokajilika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/95848590156.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_off0000b0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F5 5588 bytes
SHA-256: 42073ee2e82a10a185316422010970efc37855d33fa31395e60377d92ef9f601
font_01_sfnt_off0000c3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EB 14540 bytes
SHA-256: ac814cf88ffdcfa21d61a095ce4dc8bf742026f1dabbde358f947bc7ee4c00cf

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