Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47483913f302894…

MALICIOUS

PDF

39.8 KB Created: 2020-08-02 18:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: adbb320586c4461a1547521eef35ca43 SHA-1: 9f0faffc72d314434dac4a94e3f870ca5d546958 SHA-256: a47483913f302894d2f82ac19a8fc8b6087062317f227c03e1fc4ef603393b48
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The presence of numerous PDF links indicates a link farm strategy, likely for SEO poisoning or to distribute further malicious content.

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=aprilaire+700+manual In PDF document text
    • http://files.realwriting.org/uploads/1/3/1/4/131484133/4110134.pdfIn PDF document text
    • http://xajefizo.bbqpete.com/uploads/1/3/2/3/132302872/timebele-fupaxogab-vibakef-sefadutubilofa.pdfIn PDF document text
    • http://files.intuitivecoachingwithamy.com/uploads/1/3/1/8/131856039/gavevo-wifefuvamoru-fularewumokag-rudimad.pdfIn PDF document text
    • http://files.philhamiltondesign.com/uploads/1/3/2/3/132302924/7796697.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/1/0434/7065/1558/files/55164150917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/nedope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/vadefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/94130850023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/44212142934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/17091376300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/katokonefanilufaluzabuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puliwaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/34498703551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7820/6111/files/ziwaruwogumelurolafefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/40352754902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9181/0717/files/sepewixerekutofopapepulup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1394/6018/files/81827261513.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_off00005d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 4996 bytes
SHA-256: c8a0d5874b65a8e11670c670da36e50c5a89856eda9ce7257e238a6969138775
font_01_sfnt_off00006e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 10508 bytes
SHA-256: 71297a3e4f4f7ebbd1eec6f1b6848c24f8fb52ed4026e96dcc66f56d8d33f47e

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