Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd73a17441563576…

MALICIOUS

PDF

36.2 KB Created: 2020-09-09 22:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07e34a4b5a11273eaf1a98548bcdc6cd SHA-1: 5214d09a24eb94a8bb4f95dbd5420a1d2941c4bb SHA-256: dd73a17441563576acf6b1fdc825918f755e112126e5050b1be55b9ec85c4b40
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, another critical heuristic identified it as a PDF link farm, containing numerous external links, many of which point to Shopify-hosted PDFs. The primary malicious URL identified is https://ttraff.me/wix?keyword=hackerone+latest+report, which is likely used to lure victims. The ML classifier also strongly indicated maliciousness.

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.me/wix?keyword=hackerone+latest+report In PDF document text
    • http://files.dsmpod.com/uploads/1/3/1/4/131483305/afa4f1ba0776e32.pdfIn PDF document text
    • http://files.brewerparkcommunitygarden.com/uploads/1/3/2/7/132740285/dutigedezisaw.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/1/0429/5576/7967/files/reality_testing_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/0022/3896/files/badlapur_movie_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2195/4206/files/treatment_of_liver_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/online_android_studio.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/54bec1_194155810e834e689de07c4d55ad09dc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/229b11_f3bcd80e4cd74d179ba3d62570108005.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e0dc_86dc76e196ca46128d4fc0d8ae074017.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b80a51276c4640d8b781c73719c34f29.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_05f288aff3d64d7496fe0bdac36ce92d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/46903363160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/41247509301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/41651520786.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 3

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_off00004c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C05 4952 bytes
SHA-256: d4b767f7173a88dba276a1c7228be5221445232a1c1aa9faddfb029f6bce5ae7
font_01_sfnt_off00005cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEC 12312 bytes
SHA-256: a590858b922d0e848d2f00f28662355880310eff5ac3fc4c72772ee497bc8a8c

Open this report in the interactive analyzer, or submit your own file for analysis.