Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa830c2532e000bc…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 02:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7383568dd2930421676668ffc1ad05b SHA-1: d2d5b49082f9555d5f247c9bd64476c5a7469b33 SHA-256: fa830c2532e000bc34866efdf3b8916d2551333b884f9567dff79c20c6f271b0
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though partially corrupted, contains text related to an 'Absa student loan application form', suggesting a lure to entice users to click the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=absa+student+loan+application+form In PDF document text
    • http://files.skski.net/uploads/1/3/1/8/131871799/fumijifivi-vosadeguguzubok-pudez-tikekadexipowa.pdfIn PDF document text
    • http://files.marobishop.com/uploads/1/3/0/7/130740586/fb895d3fc8.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/1/0432/0994/9341/files/zadutejemuboziwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/neoplasia_endocrina_multiple_tipo_2a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/muvivumagilamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/xituduzulope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8525/1235/files/19304693581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/gesagutipeluta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8265/2579/files/network_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/chemistry_concepts_and_applications_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/54978452053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4371/7274/files/moxovokepari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8880/9879/files/thriller_story_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/blanchard_grinder_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/68800289391.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6816 5432 bytes
SHA-256: 384f1a0b2736a12d359656ad6999ef7ed34dc8f7f56851e464a6cf34a7254509
font_01_sfnt_off00007a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 10244 bytes
SHA-256: f5bbcc2218519c435ada96bd349fa532ac0f09a0f60746c448640fd8fd636748

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