Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a87db19999db2fd…

MALICIOUS

PDF

45.1 KB Created: 2020-08-20 03:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f51e8f3ad998c1c48837aec2eff82f7 SHA-1: ffad90fb6225f6586e450f5a71db28d7c8e75cbf SHA-256: 7a87db19999db2fd9524b2cbe71e282ea6b48db6db47a7231fd5da4a4d30e28e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, includes the URL 'https://ttraff.cc/pify?keyword=vlookup+excel+for+different+sheets', suggesting a phishing or scam lure related to Excel functionality. The presence of a large number of PDF links, including those pointing to benign Shopify domains, indicates an attempt to obscure the malicious redirector within a larger link farm.

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/pify?keyword=vlookup+excel+for+different+sheets In PDF document text
    • http://vawuxug.cailynv.com/uploads/1/3/2/6/132683024/zimoladabojenu.pdfIn PDF document text
    • http://files.mlmedicalsupplies.com/uploads/1/3/1/8/131857114/1826782.pdfIn PDF document text
    • http://files.pawprintzwny.com/uploads/1/3/0/7/130740141/3806184.pdfIn PDF document text
    • http://files.catherinecarterpainting.com/uploads/1/3/2/8/132814024/8354092.pdfIn PDF document text
    • http://files.genestewartrealestate.com/uploads/1/3/0/7/130740256/9184725.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/1/0431/7233/1682/files/cbse_books_for_class_6_maths.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/mergers_and_acquisitions_icai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/current_immunization_schedule_in_kenya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4644/7776/files/school_building_inspection_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/photo_to_caricature_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/tewovukugadeluxodoluga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/16445171452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3268/2397/files/73704346010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/mario_vanquez_gallery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/xinakujokeniziderexabole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8925/8646/files/zalika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3865/files/1906008868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/zizaxopunagotamelivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/27684990513.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_off0000720a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720A 5132 bytes
SHA-256: c9c0d91661035cc9155b3ec0ef3b0217fa527414f2da6eafd34eb846515c20b0
font_01_sfnt_off00008385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8385 10504 bytes
SHA-256: c0db60bc597994b47bb96ef6194b991dae3c0a138bc942fc3a65f09b60e65d74