Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed78aaebe1e52f7d…

MALICIOUS

PDF

37.2 KB Created: 2020-08-09 22:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9d6b73237abdbd24cf531998a712916 SHA-1: 0b663c74ee525af17ddefa45d0dbf5d293c0b3fe SHA-256: ed78aaebe1e52f7d39e455f66ab6dc6f131ef193c91d0385e965d0a057c3c950
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains text related to 'calculus by swokowski 6th edition pdf download' and the malicious redirector URL, suggesting a lure to trick users into downloading potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=calculus+by+swokowski+6th+edition+pdf+download In PDF document text
    • http://files.lagom-online.com/uploads/1/3/0/7/130775191/tobaxowex-rufofevux-tabovesilimi.pdfIn PDF document text
    • http://files.colleyvillecarpetcleaners.com/uploads/1/3/1/4/131437476/xutobozafugilira.pdfIn PDF document text
    • http://velaluz.deeperintolife.com/uploads/1/3/0/8/130814328/e00d3.pdfIn PDF document text
    • http://files.owtheatre.com/uploads/1/3/0/7/130775737/vasunabimigavozag.pdfIn PDF document text
    • http://files.jacklechon.com/uploads/1/3/1/3/131379923/juximarekinef.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/1/0430/4230/8250/files/casting_process_defects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/nuduruzomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/21530177252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/mazop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/87855132065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/tanezazuzifivesafefom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/7234673496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/zoxozuliji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/8375347409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/wulafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.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 8

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_off00005251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5251 5604 bytes
SHA-256: 353ad3c3c7ae9739c2556734d792f73f69564b4159a41c92d4db516bbec48c81
font_01_sfnt_off00006572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 10136 bytes
SHA-256: cd4696b961cdc9bcc149ef1d6edb6e99641c4e74b5ef4929e15768cf0cd8bc03

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