Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5f01ebde28654e…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 07:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: dca0392088753dea9c3a065575055449 SHA-1: 89807671416cdf94b829f97ca6b22a1460ce7302 SHA-256: 5c5f01ebde28654eb82e6751268874f42ead8b31cc94198ae08293870379aa68
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=letter+to+my+daughter+pdf+maya+angelou In PDF document text
    • https://kivofijola.weebly.com/uploads/1/3/4/3/134309380/58b6bc06a06.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/bazepajepofina-zenikogoso-vewidixefodaga.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/jeputufewujude.pdfIn PDF document text
    • https://bopiwode.weebly.com/uploads/1/3/4/3/134367631/pukegef.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/divevijapitarow_sulemavaxez_peleves.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008007.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008007.bin)
    • https://s3.amazonaws.com/kavitokolezub/963951908.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/ronimowopevasebefiwim.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/cbse_12th_accountancy_book.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/habitos_alimentarios_concepto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3239/1061/files/meet_the_masters_jason_hartman.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/english_phonetics_alphabet_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/wekepigasoputixavebali.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/tinadufomupiz.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/22732751669.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/petexuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5741/2779/files/64756216758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2913/6028/files/juxaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8534/6998/files/9092719685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9376/0434/files/download_bully_apk_obb_revdl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6145/6279/files/tresanti_wine_cabinets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6898/3969/files/91021748588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3254/2369/files/petaluma_transit_mall.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_off00008007.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8007 5320 bytes
SHA-256: d17ba05a9fafc8d8ae606ff81e0af8ab946b8fb70a6c7eedc35af888fb768cd6
font_01_sfnt_off0000920e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920E 10596 bytes
SHA-256: af0544dc6e4b604af472b8e7d72b1ea231551101e46b64da90682ff13877b180