Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d53c78137977fd2…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 06:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b33140dbf58c350ae28b14aef4a086d SHA-1: d896c42f0232f374c787dd69bb78f56bc9ad4e1c SHA-256: 1d53c78137977fd27ed2931a6fa87469feba3ed568e9c82acd46d309828d3a57
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=safety+risk+assessment+report+pdf. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=safety+risk+assessment+report+pdf In PDF document text
    • http://genir.keenforgreenclonmel.com/uploads/1/3/2/3/132302780/mavelunuri_zovopebaz.pdfIn PDF document text
    • http://files.islamtoyhwh.com/uploads/1/3/0/7/130776601/79682.pdfIn PDF document text
    • http://files.concreterentalsnyc.com/uploads/1/3/1/4/131437724/rusumatul.pdfIn PDF document text
    • http://files.accianiengineering.com/uploads/1/3/1/0/131070149/nibuf.pdfIn PDF document text
    • http://wejomubap.thaddeusmckain.com/uploads/1/3/1/4/131411896/fd6d8889202211.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/1/0433/3341/9166/files/89100050455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/43397378038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8034/7801/files/befavonetonafopikore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/nugulotaxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/jowixamer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/kutamofivuzetagus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/5827678355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/pavexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/nopat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/nilelalujidiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/99556069784.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 8

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_off00006725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 5424 bytes
SHA-256: bea24dca8d8ef0f64c48650a2d1ebe53b25b8b5873d5b5f714f94370376a4bc3
font_01_sfnt_off00007985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7985 10372 bytes
SHA-256: 7e701cd6c99b548a3b07df52c7b380b04528c61f4d13858b6d73b6148993afd3

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