Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3bec33e9c12781…

MALICIOUS

PDF

35.2 KB Created: 2020-08-25 01:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5832f3ac810338fb9d3af25647480760 SHA-1: e1ce4b12f0e993e996be826172d0f479be00061f SHA-256: 1a3bec33e9c12781c0da8a171c282a91f81738a48942005e41ac18b93d94f9e0
202 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a common technique for delivering malicious payloads. The document body and heuristics indicate a lure for a 'free trial' of SPSS Amos, designed to entice users to click the malicious link. The PDF also hosts a large number of external links, suggesting a link farm for SEO poisoning or traffic generation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=spss+amos+free+trial In PDF document text
    • http://files.juliemidkiff.com/uploads/1/3/0/7/130776043/09110.pdfIn PDF document text
    • http://nunolete.noellegracephotos.com/uploads/1/3/0/7/130775126/7494927.pdfIn PDF document text
    • http://lawob.forestbrookstudios.com/uploads/1/3/0/9/130969478/juzuwalogugev.pdfIn PDF document text
    • http://files.georgysemenov.com/uploads/1/3/1/4/131406153/bofejod_topotebebuver_tozunuzuf.pdfIn PDF document text
    • http://files.marketprotech.com/uploads/1/3/1/3/131378899/67738.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/1/0430/6049/4485/files/37480084027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2499/6758/files/55905904528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/xiwozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0558/7106/files/pneumonia_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/vonolajelilotipuvukej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/wolf_river_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8493/7384/files/can_t_stop_bass_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/dazumavokekoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/vbu_b_tech_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/bhagavad_gita_telugu_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9245/1232/files/preposition_of_time_exercises_with_answers_doc.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_off00004c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8D 5148 bytes
SHA-256: 6414ba9e134a3b908346e4ff2f0c77cebe91dfe8fe8a55a90a0808efc840d450
font_01_sfnt_off00005df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF3 10012 bytes
SHA-256: c8ca4ca3f2be3e833c4b806083f184585b58b4cfc1b26628b2c2f7683b136930

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