Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aca2f6d3dc644b0…

MALICIOUS

PDF

55.3 KB Created: 2020-10-01 00:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cddf3d2399eada6962cc607229b26dbe SHA-1: 192dbde7732823fec48633f552a7cd18228e0c66 SHA-256: 2aca2f6d3dc644b0eb560a58741bd7169a50c4c68f3d2763316f1ec8103a64d3
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://cctraff.ru/strik?keyword=disorders+of+male+reproductive+system+pdf In PDF document text
    • https://site-1036635.mozfiles.com/files/1036635/mosamesesawid.pdfIn PDF document text
    • https://site-1036932.mozfiles.com/files/1036932/dewidosowe.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/10637350082.pdfIn PDF document text
    • http://files.robbie-lee-pettit-descdants.com/uploads/1/3/1/8/131857818/welodixodav.pdfIn PDF document text
    • http://futefi.brianskahn.com/uploads/1/3/0/7/130775823/faberosutunaxome.pdfIn PDF document text
    • http://files.fantasydraftkit.net/uploads/1/3/0/9/130969386/dekibukexedozu-sajajitovubuwe.pdfIn PDF document text
    • http://files.breathingblues.org/uploads/1/3/1/4/131436978/gifedilije-dobigibomuza-jilik.pdfIn PDF document text
    • http://zobuxafuz.vitro-fusing.com/uploads/1/3/1/1/131164199/pijixag_tuvowowikug_karomuzadose_renixuwuti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/sepefegarono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/witipovelibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/22728098261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/press_kit_folder_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1017/6662/files/87810360870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0497/4488/files/fixiwetosotebibudutot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6232/1301/files/rome_eyewitness_travel_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/xesedesabexupuzere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/baahubali_1_hd_video_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/ultrasound_guided_injection_glenohumeral_joint.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAC 5236 bytes
SHA-256: 7792d3c7ff9f0aaa5b7f99cede975bad23025c7c91c398359d7d8af494440491
font_01_sfnt_off00009c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C90 10756 bytes
SHA-256: 4e28a3de887a7030858591c1dccaaf6b81968775350b5bc60026b0255fe39a5c
font_02_sfnt_off0000c16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC16D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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