Malicious PDF — malware analysis report

Static analysis result for SHA-256 a61f82a2ca330b8a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 03:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffe60bd3dfbc853516071993fcdc38ee SHA-1: 3ca24a1863aafdd2b23841427cca9f745056e22d SHA-256: a61f82a2ca330b8aa4d79373e44cb5c69145f83a88b91039b15d8c5b9cbf9350
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that is part of this link farm. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous Shopify-hosted PDF links, alongside the malicious redirector, indicates a sophisticated link farm strategy.

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=template+for+architecture+portfolio In PDF document text
    • http://files.heathergreig.com/uploads/1/3/0/7/130739651/8c518081b.pdfIn PDF document text
    • http://files.ace-agro.com/uploads/1/3/2/6/132682882/pedagugatoxefoxa.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/1/0433/5170/3706/files/xorigadutizerobapavowadov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/42565975463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6556/files/3591892029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/58928045762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/41187032232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/zafupidazebimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8149/7766/files/wokopovolotepadunirogim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4596/1383/files/50142067239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7163/3563/files/benny_bell_shaving_cream.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/ruzebufipeko.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_off00005ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 5028 bytes
SHA-256: 372955ce008d93f603304d1c36985de312c2a6283bf046d10ff56f6f3afa92ee
font_01_sfnt_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 10260 bytes
SHA-256: 49600e7f519490151eabca163d391afd0c38fc5529eb6af4ccb9a8541b8c10f4

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