Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9aeef80a30c37e3…

MALICIOUS

PDF

40.5 KB Created: 2020-10-26 00:17:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: fb58c185953eb2053c83c80728ea199b SHA-1: 56d7c081f39a5a0b9a6b933b95ad644eb20479a7 SHA-256: a9aeef80a30c37e336d951d1efd746da39d0f62d88be3f31f996a03c3075cd26
194 Risk Score

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://ttraff.link/pify?keyword=windows+7+shortcut+keys+pdf In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/limarokew_fadaxifumeto.pdfIn PDF document text
    • https://jusujonolixutuw.weebly.com/uploads/1/3/1/3/131379247/juwasilifevumuba.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/50a77143625eb.pdfIn PDF document text
    • https://rafunukogavukuj.weebly.com/uploads/1/3/3/9/133999746/galawapasiw_zobugavav_gukoloke.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/9708270.pdfIn PDF document text
    • https://gifedoku.weebly.com/uploads/1/3/4/2/134234788/rugesaji.pdfIn PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/pejujafadaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f8876426d9a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416304/normal_5f95f5f96adfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7446/4160/files/cuisinart_smartpower_deluxe_blender_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7588/7802/files/date_format_sas_enterprise_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4769/0145/files/58803268193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/talapapoteduterawikamela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/ar_15_wrench_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/android_spy_software_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8255/5300/files/gelish_dip_kit_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/selling_process.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/92522373317.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/66168221746.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/47974455380.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/17793010908.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_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5352 bytes
SHA-256: 37539f0dbe99e6463dc3ee469be462501504590072aed1941579c8939198cad9
font_01_sfnt_off0000709b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709B 10572 bytes
SHA-256: f41994b5dd00499653562d8783b83b44d7150d45221b565c8c091ca832cfce28