Malicious PDF — malware analysis report

Static analysis result for SHA-256 077cd4b4466cb199…

MALICIOUS

PDF

73.1 KB Created: 2020-07-30 12:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09f948c9764facb0c73113a885f226b7 SHA-1: 66074d09f258f1e8b555be2c4587283159fabaee SHA-256: 077cd4b4466cb19973443a89109c2d17f6fd9a8bbe50aa428df61ee209c55c93
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious URL, suggesting it's part of an SEO poisoning or phishing campaign. The document body, though heavily corrupted, contains keywords related to downloading a constitution, aligning with the redirector's purpose. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=south+african+constitution+pdf+free+download In PDF document text
    • http://files.cielogiftbaskets.com/uploads/1/3/1/4/131437941/zeretevo.pdfIn PDF document text
    • http://files.bullvilleanimalhospital.com/uploads/1/3/1/4/131406082/kerowofow.pdfIn PDF document text
    • http://files.moveptwellness.com/uploads/1/3/0/9/130969580/1a8888c.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/1/0427/5834/0774/files/447463329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/14469581204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/49719610523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/vogojiloju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/xivebubarome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/logirotofor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/1093724680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/zusixilura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/55155896674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/46668871323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/likixetok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/24161675852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/57409964146.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_off0000e1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CF 5320 bytes
SHA-256: d4b7d85bccf6298a9b1424fb19fc4bdfbd81400b2302b24e5c07beec5c9dc8c8
font_01_sfnt_off0000f3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3ED 10208 bytes
SHA-256: 5039d5e899f00e379f21849f434d032d43d4df0c7db41b110aaa5737c2449b6a

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