Malicious PDF — malware analysis report

Static analysis result for SHA-256 447673bd3368cdd9…

MALICIOUS

PDF

57.8 KB Created: 2020-08-20 14:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90723ec6b015c13c6b724ae7154ae108 SHA-1: 76c5d96227f1d7492af23aa286a9a840722c9624 SHA-256: 447673bd3368cdd93809b213e7efc631aacb299830daba672d2bf798db9e53e1
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to `https://ttraff.cc/pify?keyword=free+offline+dictionary++for+android+mobile`. This URL is used in a link farm designed to manipulate search engine results, ultimately leading to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'free offline dictionary for android mobile', suggesting a lure to entice users to click the malicious link.

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=free+offline+dictionary++for+android+mobile In PDF document text
    • http://files.aaadentalbahamas.com/uploads/1/3/0/7/130775762/tunukev_fevezovugubab.pdfIn PDF document text
    • http://files.caavd.ca/uploads/1/3/0/8/130813378/c3ef153c8032a.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/1/0429/5848/7703/files/fawudewufafifirep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/xamarin_android_default_background_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/tupasoteluxenapewevemidiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/algorithm_examples_in_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/37186438907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/public_finance_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6676/0095/files/the_fbi_uniform_crime_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/zewoxuvufogot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/5988/0603/files/chamma_chamma_new_song_dj_king.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/moment_of_inertia_of_a_cube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/fepewibe.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 5

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_off0000a4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F3 5184 bytes
SHA-256: 4326f097a1be7943dea18392fb4b102a61dc584224e7522a8a708f0bd68c60ad
font_01_sfnt_off0000b689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB689 10580 bytes
SHA-256: b3a0120b26652489a3d9a102aadb705e20412d3cc9c94c7bacdf81087d8d123f

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