Malicious PDF — malware analysis report

Static analysis result for SHA-256 8893f357378e77bd…

MALICIOUS

PDF

46.2 KB Created: 2020-10-29 00:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 47def20e92e818ac89416690b353b02f SHA-1: 4deef3c5af98f44b82a1a6463707b74e7e7c421b SHA-256: 8893f357378e77bd88504625a7b72814278ca3d4bba4ff0510e3ea47ca16ba68
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The primary redirector URL is `https://ggtraff.ru/aws?keyword=how+to+stop+pillagers+from+spawning+inside+village`, which appears to be part of an SEO link farm. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the PDF structure itself facilitates the redirection.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/aws?keyword=how+to+stop+pillagers+from+spawning+inside+village In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/tidakogu.pdfIn PDF document text
    • https://wapunukipebew.weebly.com/uploads/1/3/4/4/134440940/5672108.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/4002550.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/wupizewezasedij.pdfIn PDF document text
    • https://pumewigegokofav.weebly.com/uploads/1/3/4/3/134317234/jasemuvezofotet.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/xanebavifamopez/dumitaxojopazorufulerav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0351/1445/files/genanixuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8566/0828/files/icloud_to_android_transfer_tool_whatsapp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6653/0721/files/83295458694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7236/3432/files/social_model_theory_of_addiction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/vukidotekagujawosol.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/understanding_culture_society_and_politics_curriculum_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/correct_use_of_except_vs_accept.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2248/2101/files/sevinezakes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3710/0694/files/vibaruduzovatobaleposidil.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gisop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/runonuithread_in_non_activity_class_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/54131175275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6342/7751/files/55085608157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/navuka.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bromberger_blutsonntag.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/military_graphics_and_symbols_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/roxifumulufixivuriridab.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/65856657684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5697/0914/files/best_android_phones_2020_under_500.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_off000071b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B8 5472 bytes
SHA-256: 9008d96fb74fbb2cadac5a83986444636b5ceb9c43c8006723668fe14df1d7f6
font_01_sfnt_off0000845a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845A 11480 bytes
SHA-256: e733e66ddb33973528aba34f581e293e6c93fa6d6d07f9ef95ff93dd8e4f2d6d

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