Malicious PDF — malware analysis report

Static analysis result for SHA-256 af48de6cfa08ba93…

MALICIOUS

PDF

39.9 KB Created: 2020-09-14 18:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00f92bca95b705716beffe022e0ee9d3 SHA-1: 0106dfc78fcb159038f4933d4b05e78d39ba7dc4 SHA-256: af48de6cfa08ba93ed7a60c0fe8143c579efdc35fd3e5e165367debcbb02105f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, mentions 'Wish promo code 2020', suggesting a lure to entice users to click the malicious links. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be directing users to potentially malicious websites through a link farm.

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.cc/wb?keyword=wish%20promo%20code%202020%20not%20first%20order In PDF document text
    • http://lokodu.salveoclinic.org/uploads/1/3/0/8/130814161/b128dbf6e1ea.pdfIn PDF document text
    • http://gasikof.monumentalbeginningsdoula.com/uploads/1/3/2/6/132695601/d8a54.pdfIn PDF document text
    • http://files.tmbrepairs.com/uploads/1/3/2/6/132682790/774155.pdfIn PDF document text
    • http://rotib.hopewellhub.com/uploads/1/3/2/6/132695671/bitak_vavaje_nurapexuzipi_fanup.pdfIn PDF document text
    • http://files.susanmeehan.net/uploads/1/3/0/7/130739616/dofur_rogur.pdfIn PDF document text
    • http://files.leggsmanufacturing.com/uploads/1/3/1/3/131383398/tivuwuwodupe.pdfIn PDF document text
    • http://files.emergeinmarketing.co.uk/uploads/1/3/1/6/131606331/sesafokel.pdfIn PDF document text
    • http://files.jhva.co.uk/uploads/1/3/1/3/131384589/jeviteluzu-fanenubu.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/1/0433/9171/3447/files/81953732681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/pivedelikixezagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2018/7805/files/famagalakatikebujabovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0164/2135/files/barron_s_ielts_with_mp3_cd_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/72832558582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/jabariya_jodi_2019_movie_openload.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/cannot_delete_a_worksheet_in_excel.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A5 5228 bytes
SHA-256: 276e32c08802b89fa1e65628855f5096528bc93d31ba26b684ad19628322cc66
font_01_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 9656 bytes
SHA-256: 9b8d6c0eb448a2bcb83cbbf4210152bd7681a054654ac6e98f07c577b79ef803
font_02_sfnt_off00008468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8468 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3