Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0c1d09b0d9644e…

MALICIOUS

PDF

38.0 KB Created: 2020-08-13 12:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d149ddd1309755527c2121c765841048 SHA-1: 6fc6f089691039a3a5911420979e33e0ed48a7a0 SHA-256: ae0c1d09b0d9644ed7fddacb0f57da6dd67c2662b7c1e5a7a7b7b45994be9b50
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though obfuscated, contains text related to 'boundary wall estimate pdf' and a URL that appears to be part of a link farm designed to attract traffic. The presence of a malicious redirector and a large number of external links strongly suggests a phishing or malware distribution attempt.

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=boundary+wall+estimate+pdf In PDF document text
    • http://files.theblackribbonart.com/uploads/1/3/2/3/132303181/4f1c131.pdfIn PDF document text
    • http://files.shulman-writer.com/uploads/1/3/0/7/130739970/a80e4c53c4.pdfIn PDF document text
    • http://files.tahlequahtrails.org/uploads/1/3/1/4/131454286/vavarifinosi.pdfIn PDF document text
    • http://tazizinub.mentororchestra.com/uploads/1/3/0/8/130873995/205254c.pdfIn PDF document text
    • http://files.body-knowledge.com/uploads/1/3/2/6/132681824/2094315.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2259/6768/files/xijisemumumufojileg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7273/2825/files/accsap_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/25908270490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/86454953323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4729/5898/files/vexigenotumadulowofebitef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/pukonefirexasomawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/piano_sheet_music_kpop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/slavery_in_america_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/foods_to_avoid_on_keto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/78176770144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5235/2156/files/water_logging_and_salinity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/aphasia_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/mapa_turistico_amsterdam_espaol.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_off00004a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2C 5432 bytes
SHA-256: 2f9677de2916eb0f28e9bef68fc99758f50013786fb11095dac15dadeade19df
font_01_sfnt_off00005cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 9576 bytes
SHA-256: 97cdb2cf661b6fca7803dfe72dbf0917bfca7fe5332061fa104058b91e32f48f
font_02_sfnt_off00007daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAA 2832 bytes
SHA-256: ab0b30550c16f0218ea180a56450acc25083be48fb805cb0f6f475dfa13b8319