Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac98bdc723d47e05…

MALICIOUS

PDF

35.8 KB Created: 2020-08-18 21:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b04ae574af3692e565b01a898be84ea8 SHA-1: 0b483abc5e901ef93ebf2a33f5bb072af2abdcf6 SHA-256: ac98bdc723d47e05a862cf819c33434a25abb71ce9d77364d4b9fd727fd375cc
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded links, particularly the one to 'ttraff.com', suggest a redirection to a malicious site, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

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.com/pify?keyword=dremel+binding+router+guide In PDF document text
    • http://files.ambitiouschics.com/uploads/1/3/2/3/132302749/fec933fd08f3194.pdfIn PDF document text
    • http://resora.recrates.co/uploads/1/3/1/3/131381679/rowezovefomo_ledapofi_jerukedawur_fegosefupaxi.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/1/0437/6566/1845/files/19362671172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/244128173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/el_cristianismo_en_la_edad_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/topographic_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2238/6069/files/90463426039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/certificate_of_completion_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/10477599489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/mikumimibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/sinubevomuvaxawuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/relilasokivamizorosub.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4224 4776 bytes
SHA-256: 6ee9e7429324e5a7866505084d688d1ed7b4aaa02a28dc799adb5d59b17d0285
font_01_sfnt_off00005240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5240 10080 bytes
SHA-256: 2cea041a58b82225cc465431633472b87f7a1f275c409a8e43dfecf841abe9ea
font_02_sfnt_off000074ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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