Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dcbb52782dc04c8…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 22:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edb7fa4610dff038cf80aad47a28df5d SHA-1: 42cf0fdb90896588867ca4df537462b9ee3cfee9 SHA-256: 8dcbb52782dc04c84045d85ae1b579e0b53886afbba091cf9ee4e4288c7fb7be
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=plc+fault+finding+guide'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to benign Shopify domains but include a malicious redirector. The document body, though heavily obfuscated, contains the title 'Plc fault finding guide' and the malicious URL, suggesting a lure to a malicious site.

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=plc+fault+finding+guide In PDF document text
    • http://pekinu.kanehunamoku.org/uploads/1/3/1/4/131407164/xedelofaja-topejepijasano-mezenolapivute-sazajulil.pdfIn PDF document text
    • http://files.artbyjenniferharrington.com/uploads/1/3/1/3/131380995/xulibamojut.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/1/0431/5768/4375/files/2017_hyundai_sonata_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/dusoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/adobe_reader_vista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/similar_triangle_proofs_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/15624140593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/fuliparevuzegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/sociolinguistics_spolsky_1998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/xovaturuguguve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4718/8640/files/zibijutalunefolenuxukafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/espn_pga_scoreboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/75735337540.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_off00006679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6679 4916 bytes
SHA-256: 78cfea9d6d4455db60475b1d419b9598679f94a88efca1446cf7b4d15f5de309
font_01_sfnt_off0000773e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773E 10056 bytes
SHA-256: 3fd44aeb69683f03f8d6279c5fdff278297d14d3d2ae8d031b881d0d623fb2f6

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