Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c030ca88a7e45b…

MALICIOUS

PDF

43.5 KB Created: 2020-09-04 07:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c07ddc9c0a7d5ec873576a5a042c5f1b SHA-1: 32ffe478a4fe1ee7549d44a14348470fe8f318ee SHA-256: 59c030ca88a7e45bbe42776369f43c8ab2fadfa8ca9e71bb7b5d1ac352a48bb1
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be related to product manuals, suggesting a lure to entice users to click the malicious link. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful content.

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.link/wix?keyword=alesis+dm6+drum+set+manual 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/92ee2b_e41666873ea54099b0d597cc58c42da1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ac701_a03f40bc53cf436895489641aa75c949.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5360f8_6b4b4df0438a4e478f236c6742fd6c39.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/64d889_a163e06eac7345d8a216073c27c1023e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9e41f0_7b24c2ea05614c11996f13e1a6647b95.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/735424_c0d1ba3304f749c9836bda43d686a2fa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ef0c3_d32e948927c4485db7e505396a29e8f3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a771bd_cd2263934ebe45c5afc3c76f47c322da.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0aab01_16b10eb104464d35b6484daed60a31f5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ca32a8_a1de4ae5277e41da801cfcee95904c20.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d43733_77dc37a4f8964b8ea57db64f2feb2467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/project_appraisal_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2661/0333/files/24249005219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/anomalias_congenitas_embriologia.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_off00006c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C75 5112 bytes
SHA-256: 2f16300ef37facb1ff582945434b13b133ac59cb62cc17b3a172d6edd7daa71e
font_01_sfnt_off00007db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB8 10468 bytes
SHA-256: ce76036d37d48a34e149ebf4406e1498fa9109846de70be9aa670d616e4204a5

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