Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1e595793053dfd…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 02:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6278e8d8a8e9abc9599469af6f3cc99 SHA-1: 2c693821500f1a29d547f8a4e404ca23cb9bf3c6 SHA-256: 7b1e595793053dfd9afd7c5a76d932b7b0bedd276ea473363a4c3adfdee9a258
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body and heuristics suggest a lure related to 'community certificate online print', likely a phishing or scam attempt. The presence of numerous external PDF links, many hosted on Shopify, further supports the SEO link farm tactic.

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=community+certificate+online+print In PDF document text
    • http://files.burhanisawmills.com/uploads/1/3/0/8/130873758/b013280b7a5e6.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/1/0429/5717/6986/files/lovudiwovutel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2336/files/functions_of_human_resource_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/balance_sheet_of_central_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7514/9480/files/jurnal_agroteknologi_unej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/zebitelam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6033/8586/files/zatovezulonevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/38603728447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/libro_los_anunnaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/wordly_wise_book_8_lesson_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9911/7986/files/vufezewuwujux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6667/7655/files/ye_barish_ka_pani_song_dj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 4988 bytes
SHA-256: 56c88f664a1bb78c1b5688498b070ea72a3da7a05ba504e4011c2606bf1afc7b
font_01_sfnt_off000073be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 10496 bytes
SHA-256: d7ffe4750936bfcb0b2565da3f1330b626f3e633d85a7ba96fbe0b9f68bf8e4d

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