Malicious PDF — malware analysis report

Static analysis result for SHA-256 a419968f8ef50528…

MALICIOUS

PDF

45.2 KB Created: 2020-10-25 12:08:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 24aca7c79a326a5eec3edb36c6363de2 SHA-1: 8c560ae1ac74b581cf33dc49dfa23a891429c122 SHA-256: a419968f8ef505285b1a13a4849f32197cf54a06a6858813c1ad2930eb66c8b3
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=connected2+me+apk+pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f88d94d2f788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_5f950716b0de9.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/5959587.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/922065.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/bofejuxadisu.pdfIn PDF document text
    • https://javezevefumutew.weebly.com/uploads/1/3/2/7/132740470/pujazi.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007298.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007298.bin)
    • https://cdn.shopify.com/s/files/1/0266/8852/0382/files/51297262933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3617/9097/files/cara_merubah_ke_jpg_lewat_hp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1302/0069/files/solvency_ii_remuneration_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/ripak.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/75814481693.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bagirirovisepofepevu.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/7830303710.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/raxurunupumedod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cdeeb30-e2f8-405c-b042-8a3aa4f40e04/dolojozusiwobolatikokawow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7b0bdb6-2599-45ba-94cf-7aa81ba73986/mobolarimaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a0fc72-9d27-4ec5-8cfb-0fc4f3631b37/rvolution_cubaine_rsum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c5b203e-8757-436a-ac5d-f3c6a98f34a1/77729629296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8b986f-d567-45e3-bad0-4611900de972/notojoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e8a416-5879-4c28-994d-8b04e56b26cd/changeling_the_lost_2nd_edition_prev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d00269e4-1680-4dbf-9925-d47e7f0b5490/21424327661.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_off00007298.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7298 5016 bytes
SHA-256: f2d32a9c2cce4169e8c04cd90b741bc0c3127ae31240ce2830909d6e3bffb987
font_01_sfnt_off00008393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8393 10548 bytes
SHA-256: d45b47bcbd89783c21ca468fd6070d72f8b252c224fef955059f327b11c5f6d9