Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fb75bb0c285e18…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 08:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7eaab3af44663e159805b77b3605619e SHA-1: 915d022c8f8633935cb83206156dcf50898bda5e SHA-256: 88fb75bb0c285e184349f2a558a7490afddf6ade1d17bcf748259d1ee2c609f2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary link, 'https://ttraff.ru/pify?keyword=interim+report+aged+care', is identified as a malicious redirector, likely leading to a phishing or malware download site. The document body, though heavily obfuscated, contains text fragments related to 'Interim report aged care' and the malicious URL, suggesting a lure for users to download or view a report.

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.ru/pify?keyword=interim+report+aged+care In PDF document text
    • http://files.shunsart.com/uploads/1/3/1/8/131871854/wigaloraziforuviv.pdfIn PDF document text
    • http://puluf.nashville-reiki.com/uploads/1/3/0/9/130969723/terowus.pdfIn PDF document text
    • http://files.westfielddentalpa.com/uploads/1/3/2/7/132741052/sesuxe.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/1/0428/0100/4707/files/acretismo_placentario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/94396941802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/steam_download_starting_and_stopping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/juwamufapatuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5029/5708/files/osrs_desert_treasure_quick_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/37429819335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/xemekurarukefenexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/kaduripujimipuzaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/wojaxozepomelali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/77050930618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/tomidofakurifajino.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 8

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_off00005f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 5120 bytes
SHA-256: 9459bb866efc6a958543add8b412323bc740516301c75e949165ac19db51c9fb
font_01_sfnt_off000070da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DA 10380 bytes
SHA-256: f557a564cb16b79e45b989a98f9df29d048db8631d96f8d041a6f367f4aeb741

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