Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba706250e6865c6…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 17:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a17732e0a36315aff4518591a5141e7e SHA-1: d178eaf03f18709879b4d8d479fb26f89b098855 SHA-256: aba706250e6865c6a2ebbd431006270b5585c7198acb0faa7cb75b6411d8bb96
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 external resources, classifying it as a link farm. One of the primary links, 'https://ttraff.ru/wb?keyword=smart%20cities%20for%20sustainable%20development%20pdf', is identified as a malicious redirector. The document's content, though heavily obfuscated, appears to be a lure related to 'smart cities' to encourage clicks on these links. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=smart%20cities%20for%20sustainable%20development%20pdf In PDF document text
    • http://files.oreganconsulting.com/uploads/1/3/2/7/132740249/korevobesugike_vedet_sezadifiwul.pdfIn PDF document text
    • http://files.josiesjoys.com/uploads/1/3/0/8/130874104/finulesozonotuw-xapapekej-rokamamapu.pdfIn PDF document text
    • http://migunut.calgaryboxingclub.net/uploads/1/3/0/8/130874493/winibegusa_lenanu_supapuxapava_fubiwomofader.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/1/0429/6510/6847/files/81847351079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/31608884649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/18022775618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/tirodefolibewegomitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/19546787291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/17038344298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2101/1865/files/literary_devices_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9670/6967/files/26542739223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/mepunakigotivoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/9339194894.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 2

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_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5604 bytes
SHA-256: ecd23e5e5b8d27544589aee640d08b6debcd69f632750b379d8d1e56ff1a8a9e
font_01_sfnt_off00006f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 10200 bytes
SHA-256: 00f2c562d3724fabe6d8307770199d9656c7c9c8c8114aba4df537a04b798a79

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