Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a1e14a0c214ab3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 16:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc614977bc37bfba0072916433150cd6 SHA-1: fbc18a4670362097fec9e9843176915c21ef843c SHA-256: 30a1e14a0c214ab3d3f2bbab4ea3047ceb3559cd31bbe3c723f49aa3d29f8eba
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a high number of embedded links. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. Another critical heuristic indicated a PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting a potential SEO manipulation or content distribution scheme. The document body contains garbled text and a reference to a division worksheet, which appears to be a lure.

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=division+worksheet+for+4th+graders In PDF document text
    • http://files.sudermanmath.com/uploads/1/3/1/4/131438324/2e69ada.pdfIn PDF document text
    • http://files.mingsgardenwillowglen.com/uploads/1/3/1/4/131437711/aba560894ec8b20.pdfIn PDF document text
    • http://files.blessingrvpark.com/uploads/1/3/0/9/130969509/naridijufon-xobufufajom-demenaru-fafivefajuvin.pdfIn PDF document text
    • http://rarag.bluestarcakes.net/uploads/1/3/0/9/130969723/ragusomukut-mijuxomus-dokopi-sobizorewoviki.pdfIn PDF document text
    • http://files.julioespinosamusic.com/uploads/1/3/1/4/131437750/wowazofup.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/1/0438/2962/4982/files/24093471441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/5442626563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2473/5643/files/gulusefogogifixamefole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/cadette_woodworker_badge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/37646003471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0126/3766/files/cd4017_ic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/jejefulumivulilatog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/personal_statement_examples_for_college.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6955/2293/files/57782270774.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 7

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_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 5440 bytes
SHA-256: a4a7bd13e4cf4ee135984f1bd3aeb0fe68cfb6afb400edaa5922d23bacd5940d
font_01_sfnt_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10216 bytes
SHA-256: 2de26be38aac5cfb194c882b43716beda4e3fa99aae371ebcb61d3ea78b2ab5a

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