Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a45ea277c58e54…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 13:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3afdbdd66c7bc1b4f9ba07c00c4e3086 SHA-1: 5d989c8953be3396ea3c4a0e9c1ebe7d6e9651cc SHA-256: 44a45ea277c58e54959b05546ab198f15c60235f44b96b1d1c49385fb205745b
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as legitimate search results, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the document's purpose is to redirect users to malicious content under the guise of providing a manual.

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=whirlpool+microwave+manual+wmh31017fs-+0 In PDF document text
    • http://files.milanarielleproductions.com/uploads/1/3/2/8/132815206/285da76f391.pdfIn PDF document text
    • http://vodofeja.visualbiochemistry.com/uploads/1/3/1/4/131407921/8436005.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/1/0433/0687/7080/files/13121593915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/1812_overture_cannons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/pipubuvawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/bescherelle_franais_conjugaison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/duputirubukukedaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/pokerenopenuvel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/camila_cabello_senorita_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/federal_trade_commission_credit_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6749/0972/files/foxy_get_off.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/gajomer.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_off00004f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6B 5892 bytes
SHA-256: 8178d856a0e48a2469d2eb189203e0deeb3f6a5f70ab8b0a03c8aadab1d221dd
font_01_sfnt_off0000637d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 9980 bytes
SHA-256: 2957a872461c0170085b0fb18e61aff51026ce39db8ed2493d8039fd007fd11b

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