Malicious PDF — malware analysis report

Static analysis result for SHA-256 e718e37ce50f591f…

MALICIOUS

PDF

56.8 KB Created: 2020-08-21 14:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 078571aad9a358993df7282205db7749 SHA-1: 0910f95a5933bc7f9da554b7a735c5c38e7955de SHA-256: e718e37ce50f591f734305eb4b85ba83f93096a2cedd7acb0e6875f7be415c7f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=november+2019+calendar+template+free`. This URL is embedded within the document body, which also contains text related to a calendar template, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on `cdn.shopify.com`. The ML classifier strongly flagged this PDF as malicious.

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=november+2019+calendar+template+free In PDF document text
    • http://files.glassandsticks.com/uploads/1/3/1/3/131381919/57493b477bd.pdfIn PDF document text
    • http://kofel.writingtotheworld.com/uploads/1/3/2/7/132740708/6145278.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/1/0437/9249/8850/files/pofulirutuwulojijuxoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5560/3094/files/84984691432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/xerezetijokorixig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/assignment_abroad_times_epaper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/algebra_2_book_common_core.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/kafubarifamef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/booster_sound_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/91174358505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6059/3567/files/carousel_vector_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/tapufupeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6046/9400/files/platform_shoes_online_south_africa.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 6

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_off00009e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9E 5776 bytes
SHA-256: 57db30c72f9a716dc42fcb5a7dc54f0e2ab64bae399237d4b2ec05d2afacdbe5
font_01_sfnt_off0000b235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB235 10536 bytes
SHA-256: cc05ff2f0d1d243fc592a9c66ed7d3aed2f974d543e7aee41513ed4f24662a28

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