Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd23cfa498b6b48…

MALICIOUS

PDF

46.9 KB Created: 2020-08-18 14:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9dea5f4eb2854d9cb687a543902fe2e4 SHA-1: ad19b7013880f19ee0c9023c6da36859b936e15e SHA-256: 1dd23cfa498b6b48fee2821100344ff073f222f39ce2cee28f8dfd2ad18263ba
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a lure related to an 'Australian visa application form 1257' and includes a link to a redirector service. This redirector is part of a link farm, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains the malicious URL and references to Shopify links, likely for hosting benign-looking but ultimately malicious content. The presence of a callback lure heuristic further supports a social engineering attack. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=australian+visa+application+form+1257 In PDF document text
    • http://devat.tfadfw-resumehub.com/uploads/1/3/1/4/131483083/06231.pdfIn PDF document text
    • http://files.fairytale-wedding.ca/uploads/1/3/0/7/130739330/4468847.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/1/0429/7192/2591/files/96815122091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/89775898907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6687/8102/files/ielts_writing_test_task_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/disney_songs_piano_sheet_music_easy_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/34900334340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/fodiluvokegemujiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3687/4651/files/weebly_teaching_portfolio_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/algebra_2_textbook_florida.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
🗂 Part of campaign: tfadfw-resumehub.com 3 samples

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_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 5596 bytes
SHA-256: d7e59b583da4dca96834482655a8c9026623d21cb42b313041ead2d417cc6ba4
font_01_sfnt_off00008852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8852 11204 bytes
SHA-256: 552f147b1b3dee7fd03942cdad11707120db4e5c569d31eda343bc132a0d75a5

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