Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcdb8dfbd3e38728…

MALICIOUS

PDF

70.2 KB Created: 2021-01-14 23:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 86579af3afc5a65290090c0648fc70a9 SHA-1: 79b744ca17eaf61116d0fcfaaa862cc1674cfdaf SHA-256: fcdb8dfbd3e387286cfdf595fd749c3f6cc6690052a08171e79557e11afa7415
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Jordan rules book pdf free'. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=jordan+rules+book+pdf+free In PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/5859251.pdfIn PDF document text
    • https://demuxovepeb.weebly.com/uploads/1/3/4/3/134311881/xepulugoxa-nekunobi.pdfIn PDF document text
    • https://wibakaxidame.weebly.com/uploads/1/3/2/7/132741334/fozorimupilimimunosa.pdfIn PDF document text
    • https://rutobugexamaxip.weebly.com/uploads/1/3/4/5/134508198/1950035.pdfIn PDF document text
    • https://nogulakotu.weebly.com/uploads/1/3/0/9/130969216/bedf2b456a.pdfIn PDF document text
    • https://kinotadi.weebly.com/uploads/1/3/1/6/131606109/silukuwolezi-noragonopim-tarutevolelup-ribanujasej.pdfIn PDF document text
    • https://site-1246790.mozfiles.com/files/1246790/report_elder_abuse_anonymously_florida.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/jerero_xajazetijetit_seredisokam_penepugibapuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/notofoma.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/45035274583.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/noronowifumezugibazas.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/electronic_signature_pad_for_documents.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_off0000d619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD619 5228 bytes
SHA-256: 0cc3d3f894e021be486213c8952bc23ade3ce97f5a2bd25b7b6afcb07d26be13
font_01_sfnt_off0000e7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E9 10812 bytes
SHA-256: 1712e0cf345147eae77ae201471e0ebfa0c77d803b2bc65d37328a67767e70d9

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