Malicious PDF — malware analysis report

Static analysis result for SHA-256 063e18885aa1052f…

MALICIOUS

PDF

40.6 KB Created: 2020-11-04 04:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: de9e9e05d0bcfeb70d57e5309930a874 SHA-1: b4389e7996775ad18010b6a712cc0f4d723cac31 SHA-256: 063e18885aa1052f04e22fe120e97b1ec6e533c1c9691fa108b6c7da25f32a88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to suspicious or unknown domains, indicating a link farm or redirection strategy. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, suggesting a deliberate attempt to direct users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/123?keyword=manual+for+brother+ce8080prw In PDF document text
    • https://famotufenimuz.weebly.com/uploads/1/3/4/1/134132127/7353534.pdfIn PDF document text
    • https://relulime.weebly.com/uploads/1/3/4/3/134384492/tivozuw-zojekev-gujetumekuku.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/ziwibav.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/xosazoz.pdfIn PDF document text
    • https://bululirujoko.weebly.com/uploads/1/3/4/4/134487270/juvobelilesi.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/lebaxa/81072705373.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/causes_of_ischemic_heart_disease.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/old_balance_sheet_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/mevexezirufon.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/bhagwat_geeta_in_gujarati_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/52832710350.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F93 5496 bytes
SHA-256: b0ba376ed4d7a3656708dcc800e3b5278f5c724e85dcc9ccf5bcdb7b034bd3ce
font_01_sfnt_off0000725d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 10380 bytes
SHA-256: cf040ab056a99e686b351d41a34ac4d8cc29eadb6a26de7371f45fb925f1b2b5

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