Malicious PDF — malware analysis report

Static analysis result for SHA-256 5825844b5933d957…

MALICIOUS

PDF

38.5 KB Created: 2020-08-16 01:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e97b8ca54ac4f059515995c8a35840f4 SHA-1: a7e511c33c859588a87a5573305c02ac2c230fee SHA-256: 5825844b5933d957147a58c736573577712960b4125ec40b9bf00cfd66e57ab6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a research paper. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the primary goal is to redirect the user to a harmful site. The presence of numerous Shopify links, while mostly benign, indicates a pattern of using legitimate platforms to host or link to malicious content.

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/wb?keyword=applications%20of%20enzymes%20in%20food%20industry%20pdf In PDF document text
    • http://files.ag-cat.com/uploads/1/3/1/6/131637631/da720edcbfb2.pdfIn PDF document text
    • http://vitobefap.wow4metrodetroit.org/uploads/1/3/2/3/132303338/448007.pdfIn PDF document text
    • http://diturunaj.bangsar-properties.com/uploads/1/3/1/4/131438096/tezurav-xalonubebad-tofuwizadasi-xegera.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/1/0433/6294/3127/files/aplasia_cutis_congenita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/41826707368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/service_dog_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/liribul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/99483160337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/wopemenubisipumip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/68413367970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/89150821786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/33952400197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8502/7746/files/48226088676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/peganinizuzitat.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 5

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_off000059cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CD 5440 bytes
SHA-256: 18190412b62361f14dd2dca8eb14bb698be74002dad521b7edfb4765cdbee21a
font_01_sfnt_off00006c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 9556 bytes
SHA-256: edca9b223721a96db416eae498db00c9bdbddef8b7b0cb6c9bffb424cd24d849

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