Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc87ce5f78c40bc7…

MALICIOUS

PDF

44.6 KB Created: 2020-08-12 06:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 865df12c883e5f89c5ee72c9c809cc65 SHA-1: 3bfe70c615b9043541a23905486f720f62c5c17c SHA-256: fc87ce5f78c40bc738fdb8eeb0a0ca7d0e5231ca1e6e07c90e31a4955fa852dc
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to trick users into clicking the malicious link. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted from this sample.

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=aarhus+convention+1998+pdf In PDF document text
    • http://files.luxaeternasolar.com/uploads/1/3/0/7/130775108/nipusenivobe-kipazimunika-jokiwoxenes-lamemasuxoru.pdfIn PDF document text
    • http://files.workinnvision.com/uploads/1/3/1/3/131384018/zudemesenodevakani.pdfIn PDF document text
    • http://files.k9clubhouseymm.ca/uploads/1/3/2/6/132681690/fd3f1d210d649.pdfIn PDF document text
    • http://files.dryreefband.com/uploads/1/3/0/7/130738951/3b5fc0054ffc.pdfIn PDF document text
    • http://files.prairiedogpottery.ca/uploads/1/3/2/6/132682076/80456802629f5.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/1/0432/1083/4077/files/david_blaine_real_magic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/elementary_book_report_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/fedotafax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/complicaciones_del_trasplante_de_medula_osea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/zoner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/architectural_design_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3501/7895/files/32101205689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/ratetutalajopexitaxipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1473/files/university_calculus_early_transcendentals_3rd_edition_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7498/4863/files/nefimakavufoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/introduction_to_statistical_learning_with_applications_in_r_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/79319281887.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000701c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701C 5664 bytes
SHA-256: 0fdfa55f135df8bbc8b8f7648efd19f96334b013fb2c2fb4b150db38f012f434
font_01_sfnt_off00008369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8369 10168 bytes
SHA-256: e4d5d6cc511e3e7f05ce21db55b8e248ebee93ef3054185552981d6fc80126b4