Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb91c73b7ac2317…

MALICIOUS

PDF

49.6 KB Created: 2020-08-24 14:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89b4a726c4930956dc388a432d75ad18 SHA-1: 646142ea063b538d0956d8d327a1863bfa70a1c6 SHA-256: dbb91c73b7ac2317ad6d1c519628b5eca3e60324ce7161d3004baf74da4dd97c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and driving traffic to malicious sites. One of the extracted URLs, 'https://ttraff.cc/pify?keyword=android+17+18+real+names', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking PDF links, suggesting a lure to a malicious payload or phishing page.

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=android+17+18+real+names In PDF document text
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.pdfIn PDF document text
    • http://gifatab.irrigardens.com/uploads/1/3/1/4/131437601/burome.pdfIn PDF document text
    • http://files.jansceramic.com/uploads/1/3/0/7/130775286/b0717355a0a32.pdfIn PDF document text
    • http://files.atherstonegallery.co.uk/uploads/1/3/1/3/131398449/tadomojadukifej_fusizewib_vegiwuxunufetiz.pdfIn PDF document text
    • http://files.plumbpress.com/uploads/1/3/1/4/131438245/8826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0341/0589/files/jatigimus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/blue_iris_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3952/1959/files/anita_baker_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/situation_analysis_marketing_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/47650823176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4440/files/31584173534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/atomic_habits_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/bachmann_trains_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/91430599059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/liebermann_burchard_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/7291996542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4407/7722/files/40190554667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/balancing_equations_practice_2_answer_key.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000744a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 4996 bytes
SHA-256: 67f1e1ad8d0471c99b18851841096f8fa6c0a6c2cbd57d17a4f49a47bcfbb235
font_01_sfnt_off0000851a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 11076 bytes
SHA-256: bd84fe43967e331aebe5fd71aea3dda0196fc52160551b810839e5f4e447161b
font_02_sfnt_off0000aacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAACB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e