Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1ab191f302fcc0…

MALICIOUS

PDF

69.2 KB Created: 2020-10-30 20:32:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: e4fe040088f63470b3df1f8062f7fcca SHA-1: 84431c619e3a1bcc1e05254024660466fd1d0739 SHA-256: 3e1ab191f302fcc057b4329e5397c47597c3e1dc058cc1c3f806951af9195b18
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=reflexologist+near+me In PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/1419886.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ae9b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ae9b.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000f930.bin)
    • https://cdn.shopify.com/s/files/1/0492/1946/9478/files/nofavebuwivumosedes.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/20548515473.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/92255321058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bd658c-1cfd-40c1-9662-10b99f406447/majipaxuroredu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9510/8000/files/4144164390.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/afinidade_eletronica.pdfIn PDF document text
    • https://s3.amazonaws.com/zukukelejurotef/crock_pot_cookbook_with_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/80384981900.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/sample_aptitude_test_for_employment_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/venozogukibates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22dd7a3-b32e-42d0-bcab-520dd324e3a9/66644577802.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_off0000ae9b.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000e49d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000e49d.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9B 4952 bytes
SHA-256: 8dc8cfa6e3a19e604bc2c462529a96db6939869bc4245cd6fd38eb352e02b9cb
font_01_sfnt_off0000bf65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF65 10844 bytes
SHA-256: e5c5467f9d305ec179501231a071bfcfad7c692281b198b927ab544adb1a4bf6
font_02_sfnt_off0000e49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49D 16060 bytes
SHA-256: 9044de52cb519c95ee67ddce32ea384e940c5cdde4d4dd99e22aebcefe2ca402
font_03_sfnt_off0000f930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF930 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361