Malicious PDF — malware analysis report

Static analysis result for SHA-256 367b5cf6c5440156…

MALICIOUS

PDF

72.3 KB Created: 2021-02-18 19:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 016613113a8b0d53d2eb0924ea83adbd SHA-1: 3ad614c70065bb3058bc8dca21314ba85a362280 SHA-256: 367b5cf6c54401562e84e244dd8c7869563dd9682ea3ce9b67a518b462e54cd5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/123?utm_term=asus+maximus+vi+hero+ram+compatibility PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408866/normal_5fe33764841cb.pdfIn PDF document text
    • https://kajubuti.weebly.com/uploads/1/3/2/6/132680994/piwekulisas.pdfIn PDF document text
    • https://bokesavuxi.weebly.com/uploads/1/3/0/9/130968985/zufebeb-xixojabesol-sopewujiso-kadulosozukovip.pdfIn PDF document text
    • http://fringigejy.site/sezebitudabawikeraneduxirbn8mb.pdfIn PDF document text
    • https://dawosovakix.weebly.com/uploads/1/3/6/0/136097295/d018a195.pdfIn PDF document text
    • https://dufebekeromodi.weebly.com/uploads/1/3/0/7/130776386/fotadufotezogazu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416513/normal_5ff2559aed51d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426063/normal_601c9af71ff4b.pdfIn PDF document text
    • https://bemofoserobonuw.weebly.com/uploads/1/3/0/7/130739893/fupijot.pdfIn PDF document text
    • http://nadahul.ru/65549231039qyxjj.pdfIn PDF document text
    • http://baffer-shop.space/57046496213wox7j.pdfIn PDF document text
    • http://creditpm.com/starmaker-_sing_karaoke_songs_for_pc1ol1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479240/normal_5ffa5b81e5723.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/wovisak/89430267894.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/37890755909.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/zoxasaxoxosoxeresu.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/mhgen_insect_glaive_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/omg_bpmn_2._0.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_off0000d955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD955 5532 bytes
SHA-256: d41de08731e00bc067033db29de89e671293158126cf208cb0b55492aaea1522
font_01_sfnt_off0000ec03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC03 12412 bytes
SHA-256: 7b057ab5783a0e1925cc14b7908680e5ffbe131a3b15afa308bcea065d96ee81

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