Malicious PDF — malware analysis report

Static analysis result for SHA-256 753d3f5f22f7bb1d…

MALICIOUS

PDF

60.8 KB Created: 2020-08-04 15:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a972ea4eed94001274c0b4075d3dee25 SHA-1: 0b07ad4a063fe0119cdde79965f5d5afa79a96d8 SHA-256: 753d3f5f22f7bb1d764ff26f2d168e489652a47e3f545154fbab4a3dd74665ac
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious domain (ttraff.com). The ML classifier strongly indicates maliciousness, and the presence of a link farm heuristic suggests an attempt to game search engines for phishing purposes. The embedded URL and the document body text, though heavily obfuscated, contain the malicious redirector URL, indicating the primary intent is to lead the user to a compromised site.

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=activated+sludge+system+pdf In PDF document text
    • http://files.nweprowrestling.com/uploads/1/3/0/7/130739544/5ef45f8.pdfIn PDF document text
    • http://files.penangjewishcemetery.com/uploads/1/3/1/6/131607943/podus.pdfIn PDF document text
    • http://files.newleafpottery.org/uploads/1/3/0/7/130739174/nenoxim_wekizox_raxosivejiwa.pdfIn PDF document text
    • http://files.delaneysalonscoppell.com/uploads/1/3/1/4/131482819/dogugisenuk-kinusop.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/1/0440/3652/2149/files/clear_cache_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67264452348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/togidupezututukavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/biggest_cities_in_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7861/4168/files/75009832101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/bernard_werber_les_fourmis_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/34850305171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/85574626542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/nubixisid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2386/7805/files/kawobefewavotipepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3128/8216/files/8066520348.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
🗂 Part of campaign: newleafpottery.org 3 samples

Related samples 4

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_off0000b0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B9 5528 bytes
SHA-256: 31f8badbeae271b3a412d726e1d212b321659eb8b89d8233582f22cdaabfa84d
font_01_sfnt_off0000c390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC390 10088 bytes
SHA-256: 68b1e8cd9309f8ed1d99e97419e40659441e1dd5b0ccb8bfa0b629a1f12e3fd5

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