Malicious PDF — malware analysis report

Static analysis result for SHA-256 8618847b5204f391…

MALICIOUS

PDF

63.0 KB Created: 2020-08-18 15:04:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7de921fd9bb2392c5dbb51b1c9dd7d9a SHA-1: 5424bc56406946ddb599bcb9454c015e14cff1da SHA-256: 8618847b5204f391586026c57d2252693f5891ae5ac0647a7b548e8823c17917
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The embedded URL and the document body text point to a lure using a 'Cisco ASA Firepower Threat Defense datasheet' to entice clicks on the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=cisco+asa+firepower+threat+defense+datasheet In PDF document text
    • http://files.californiadaylilies.com/uploads/1/3/1/3/131381919/4690694.pdfIn PDF document text
    • http://wonebos.yeyeluisahteish.com/uploads/1/3/0/9/130969536/jitibotagetudal.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/1/0437/8407/7473/files/audio_song_editing_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/dibojinikamalomaguvofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/11196423447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5661/8917/files/sor_callista_roy_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/tuzefaxofosufotaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4679/files/windows_7_product_key_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/barron_s_regents_exams_and_answers_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/solaxoxibopedigutikip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6565/4946/files/90886284645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/84567643659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4664/files/nokun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7170/8065/files/assessment_proceedings.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 3

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_off0000ab4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB4F 5208 bytes
SHA-256: 4e277dea6a2faa11718297783ed3e51d8dcc21923f1885a5c5762cc823536dca
font_01_sfnt_off0000bd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD09 16156 bytes
SHA-256: 8e44701061ea58e31ec7989326501fbb6b17dadc7cf0ce6c04abd8101856607f

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