Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d2471b7a186a0d…

MALICIOUS

PDF

34.1 KB Created: 2020-08-21 16:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5dff971bb4c1aea702bb51c61932f4f SHA-1: b8ef1abed3c085c3a211691204393a3d700385ff SHA-256: c6d2471b7a186a0d44693a2402f2af1a893aa61f702a461ee666d0bf69b52f26
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a boiler manual, aiming to lure users to a malicious URL. The document body and heuristics indicate a link farm strategy, with numerous embedded URLs pointing to external resources. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload.

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.cc/pify?keyword=worcester+24cdi+combi+boiler+manual In PDF document text
    • http://files.accentphotographybykim.com/uploads/1/3/2/6/132680813/telera.pdfIn PDF document text
    • http://files.esa-ohio.org/uploads/1/3/1/4/131437017/giratez.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/1/0431/1423/4017/files/benim_hocam_ayt_matematik_deneme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/90571265751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/gisomabegijir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/41789803245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/57637230800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/medatiretizebatup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2109/0471/files/dolafaviri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/active_and_passive_components_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/19586507916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/53487870807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/wuvarakawore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/zuzubowufitukeforetadef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8371/files/xejujokilug.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 4

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_off000047e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E1 5460 bytes
SHA-256: 7b44af206aca0f4c64286dec0b51aed31a3db79cde2e1b4ef3fb841cac4f4971
font_01_sfnt_off00005a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A68 9724 bytes
SHA-256: 0d0b667424043ae9a4a3141ad478dbd0d6e79ce30d9ee30c08c8cc6239ed1344

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