Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ec986ad679655e…

MALICIOUS

PDF

46.5 KB Created: 2020-08-15 00:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ceb92a8c12d33b3309ac533384d07fe SHA-1: 5b3445edc503cd25c181bbbdc4f1d6cd70c84404 SHA-256: a9ec986ad679655eb71b103fb39c14b11d2a8d221e3f238664832fc800b66bb4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a malicious URL, likely intended to exploit user interest in Android issues. The PDF also contains a large number of links to external PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicated maliciousness. No scripts were extracted from this sample.

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=android+6+google+play+services+has+stopped In PDF document text
    • http://vapeseb.care-affair.com/uploads/1/3/1/4/131438234/xamibu_xaxewirorakadas_kelamidum.pdfIn PDF document text
    • http://files.artsoulhealing.com/uploads/1/3/0/7/130776141/0b49b91.pdfIn PDF document text
    • http://files.andreas-skincare-bodytherapy.com/uploads/1/3/0/7/130739239/pejefoke.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/1/0432/6057/5899/files/96557826712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/cambridge_igcse_mathematics_core_and_extended_fourth_edition_answers_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/8035946678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/15897713771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/jerurasusevudedogasadof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/mevokakim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4910/6073/files/92404615421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/94063762346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/wufura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/89503825361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/79106003167.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 5

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_off00007750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7750 5640 bytes
SHA-256: 296ed9e47916a463406458ecfd99b46838d609bf1a2bcdfe739c39692f3fa119
font_01_sfnt_off00008a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A81 10060 bytes
SHA-256: a9a50863dccc5295f9e387f4bb5a5c86fa8e75f3bc9c5d0ef8c1473d83bb505e

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