Malicious PDF — malware analysis report

Static analysis result for SHA-256 044d85fe84e47d85…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 16:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 996a86e03e6a460c13284393efb8b8ab SHA-1: 1e87d195ab730a095ccd71cc58e1b7554d355663 SHA-256: 044d85fe84e47d85c295d16dc6a89c64941f4a0e9c34c06a0e96ae03734faac7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to redirect users to potentially harmful content, likely for phishing or malware delivery.

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=broadsheet+best+bars+perth In PDF document text
    • http://files.carolchaffinlimbachart.com/uploads/1/3/0/7/130776228/pumokulubop.pdfIn PDF document text
    • http://files.kitchen-519.com/uploads/1/3/0/7/130775471/a79112aaf3815ae.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/1/0438/9571/8040/files/8212299723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/play_store_apk_for_mi_tv_4a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6326/3910/files/blemish_remover_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/mibeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1578/2048/files/visaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/how_to_extract_zip_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1024/2198/files/22001391890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/90515266749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/angulos_entre_paralelas_ejercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5557/8273/files/acs_census_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9183/5547/files/international_franchise_contract.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 3

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_off0000787d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787D 5204 bytes
SHA-256: 22a0d4e9856f39fe87413d0589f48f320976f9266dadf4e12ea727509f1ecb4a
font_01_sfnt_off00008a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A20 10144 bytes
SHA-256: d8a44a564f7472ed6d6345dc91614f75db0519a9e9a9440b49304f22aad23162

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