Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff75bf6b2894244…

MALICIOUS

PDF

46.4 KB Created: 2020-08-10 11:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53979fcab3f67613ed8aeb8515290015 SHA-1: 91ae35ad09f42e0b56480efa7c250d142cea9045 SHA-256: bff75bf6b2894244f1b93ba92e1f75ad496e775e3d9b21e9b051cd631561d0b0
234 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to external sites. One of these links, 'https://ttraff.cc/pify?keyword=cadbury+report+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/pify?keyword=cadbury+report+pdf In PDF document text
    • http://files.thewhitefamilyreunionisaiahcarrie.com/uploads/1/3/1/3/131384113/5251865.pdfIn PDF document text
    • http://files.americasschoonercup.com/uploads/1/3/2/6/132696274/9862042.pdfIn PDF document text
    • http://diwup.thisbostonlife.com/uploads/1/3/1/1/131164250/lujogujigo-jezutegago-mizamonazowi.pdfIn PDF document text
    • http://files.gittco.com/uploads/1/3/1/6/131606631/bewazewodixek-lanova-jekaxawotum.pdfIn PDF document text
    • http://files.maplegrovepta.org/uploads/1/3/1/4/131407445/mowuwesuzevow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/zinon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/88570668720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/definicion_de_dificultades_de_aprendizaje_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8846/9411/files/36071301590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/gisewov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9301/5190/files/nekulexasimiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/namegumebuxogibomixipuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/65245497500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/6139723577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/rugadoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3501/7895/files/intellectual_property_assignment_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7552/5022/files/migafosimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/xepudupodibowovesov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/81398903836.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 4972 bytes
SHA-256: da06731e1acd116c581a009ba50a282b48da0620bfbe466c5db526e97db84a94
font_01_sfnt_off0000882c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 10660 bytes
SHA-256: 9b00860056c944753192fe6910c65953bda4d2dcc5b1d082e2ab1cef128ffb27