Malicious PDF — malware analysis report

Static analysis result for SHA-256 9872acd326ea0d35…

MALICIOUS

PDF

36.0 KB Created: 2020-08-20 04:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89150ac84da4dfce5ea5e9c1dd9608a3 SHA-1: a535ea4638d304465e2ff8b118f5f80717c9397c SHA-256: 9872acd326ea0d352625b7d58056d34d7e4a6026cbd33c28d6b9630b6fbf5b4e
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=good+night+gif+images+free', points to known malicious redirector infrastructure. The document body, though heavily corrupted, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lead users to a compromised or malicious site.

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.com/pify?keyword=good+night+gif+images+free In PDF document text
    • http://narod.rotarysmamidday.org/uploads/1/3/0/7/130775195/3346329.pdfIn PDF document text
    • http://riwekano.raleighgardiner.com/uploads/1/3/1/0/131069934/dexefivixotaja.pdfIn PDF document text
    • http://files.startcincinnati.com/uploads/1/3/1/4/131409017/716156.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/1/0436/4192/9886/files/does_google_docs_save_automatically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6154/2045/files/assistant_engineer_electrical_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/practical_phonetics_and_phonology_collins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/smash_everyone_is_here_meme_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/66031494017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/damezedanutakojasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/25618111135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/bunco_score_sheets_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/35936686869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/piduruseku.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_off00005315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5315 5320 bytes
SHA-256: 6ea7bd4250a957fdfa238365110ebca0909c2aac0ecbb47c0784a9c49f061acd
font_01_sfnt_off00006503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6503 8956 bytes
SHA-256: b73a4fd567ae10eafd5214b19f901d8aa9ced79381b8eb801e5684f786abaad7

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