Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d130b42045f4b3…

MALICIOUS

PDF

37.8 KB Created: 2020-08-11 01:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a62dd2d36bd827ee8182710d4e9c63cc SHA-1: aa694ffc8469fc98d0ea4a9cd65d3647fb6cbb12 SHA-256: 10d130b42045f4b38f0112d6662badb8a3887ebb3d8b8b2633741d63a7ec4baf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) and a large number of other PDFs hosted on Shopify. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to lead users to malicious sites. The document body, though heavily obfuscated, contains the primary redirector URL and several other PDF links.

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=active+passive+voice+pdf+worksheet In PDF document text
    • http://savika.trixielizard.com/uploads/1/3/0/8/130814168/nesijimomexij_dujosabaro_kuremajoka_juwawatepo.pdfIn PDF document text
    • http://files.codeblaque.com/uploads/1/3/2/6/132695741/febikupa-safiboxe-fivami-jikitudup.pdfIn PDF document text
    • http://files.wildlife-specialists.com/uploads/1/3/0/9/130969944/porotaboram.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/1/0432/3871/9648/files/danotifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/vidudubafekuzezol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/congenital_gastrointestinal_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7769/2581/files/english_to_bangla_vocabulary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/adamantite_scrap_sekiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/cardiopatia_isquemica_clasificacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/30593332775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/biology_in_focus_campbell_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6226/2936/files/20960897665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/loxasujewemujo.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: masakoonodera.com 9 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_off0000563b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x563B 5416 bytes
SHA-256: 63033bf7da815cf07da02e5186014a28c1ed6106bb2b4f98133ea46d7adec1b5
font_01_sfnt_off000068ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AE 9852 bytes
SHA-256: cdddb1f42c2f13a45e1e5ad233a7c9d61043cf3ffce9715c902666e0865d1bc5

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