Malicious PDF — malware analysis report

Static analysis result for SHA-256 753e3654a57aea1a…

MALICIOUS

PDF

45.8 KB Created: 2020-10-25 18:27:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 507b3ba0cba9d6824e01ad32ed8a2a7b SHA-1: 67c4838f7ed822983153ef635df0d1919a199854 SHA-256: 753e3654a57aea1ab4768f0a1d99e7bf9d45aa09910416671ea5b6fd92adf73b
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.me/123?keyword=store+hours+sign+pdf In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/jomerisimuna_ludor.pdfIn PDF document text
    • https://mafopobivo.weebly.com/uploads/1/3/4/3/134322173/xobowebedujefaso.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/10b87.pdfIn PDF document text
    • https://laxigozi.weebly.com/uploads/1/3/4/3/134361341/litivax_widogeduvepu.pdfIn PDF document text
    • https://warakamaluxib.weebly.com/uploads/1/3/4/3/134378328/2b86f0d40973a.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/bigatulovipalij-jebomumuk-tipazonode-kefogedepula.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/599fcc78c.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000727a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000727a.bin)
    • https://cdn.shopify.com/s/files/1/0430/3441/1157/files/wadekekewaxalavovatogitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/invader_zim_loud_house_crossover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7069/6855/files/monster_hunter_apk_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0362/9727/files/tian_mi_mi_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9670/3647/files/fallout_4_enb_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/4796152398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9741/4595/files/34020226734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbbbbf18-6bc7-42e3-b1d0-ce353e854743/xedimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef76fe7-98fe-4133-9b13-098aaca38b4b/feninokopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaff3889-ac50-4ee7-ad0c-9d26b95bb0b3/85163138579.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 extracted file (font_00_sfnt_off0000727a.bin)

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_off0000727a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 5164 bytes
SHA-256: 32dc752a930f125a0e9a7bac6582d969538e2c39b0dee24c26cc3b193b3ba2a0
font_01_sfnt_off000083fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FE 11132 bytes
SHA-256: 90e6dba71d6909153f0705292e20fb43506b452382a90c711d6f408be0b4698a

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