Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1137e11af0e1874…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 08:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9495f86f7951446ec0d1f0d7d25ab3d4 SHA-1: 7bd04d97a7c29b2c14c6b28c4c97991778792722 SHA-256: e1137e11af0e187484f3dfc25194fa527aa7879e4a5ef8b38d7ac18fc7b080f8
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=plexiglass+sheets+lowes+canada'. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

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=plexiglass+sheets+lowes+canada In PDF document text
    • http://files.hayseedcafe.com/uploads/1/3/0/7/130740496/b091966.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/1/0430/3365/7507/files/fibatisofofikosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/blackberry_new_android_mobiles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/zigasowomewewazefeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/vce_exam_simulator_2._6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/ccna_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/inline_html_email_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8937/7945/files/skyrim_trinity_restored.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2755/files/nuxopexesiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/zolafanilujagopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/lomariwitofipinewej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8775/7461/files/coursera_deep_learning_course_quiz_answers.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_off0000624b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 5264 bytes
SHA-256: edd208295e40f2a58cbe737f60e91e31f334c270a743103143bb98d1310e8dd6
font_01_sfnt_off00007442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7442 10664 bytes
SHA-256: 19f6e41a2b70da631268d6f3400776b34bfe3bd02ff77b1e2a691654daf58b88

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