Malicious PDF — malware analysis report

Static analysis result for SHA-256 456f2a371ae4d05a…

MALICIOUS

PDF

41.4 KB Created: 2020-08-03 01:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7ad13a9802e16330341201651b25f8b SHA-1: 39f83d9d7afbb89fffa346bcae18f53bc335b569 SHA-256: 456f2a371ae4d05a395f49781ddd2522a6bb3568c76c362068fe14b5a6da74d6
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous external links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate malicious destination, likely a phishing or malware distribution site. No scripts were extracted, but the link farm and redirector are strong indicators of malicious intent.

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=hc-+sr04+digitalpintointerrupt In PDF document text
    • http://files.theminimaldoseskincare.com/uploads/1/3/1/1/131164117/nazafo.pdfIn PDF document text
    • http://files.mustardseedsgrow.com/uploads/1/3/1/1/131164260/rofep.pdfIn PDF document text
    • http://files.digloso.com/uploads/1/3/2/8/132815172/1742371.pdfIn PDF document text
    • http://files.systemskateboards.com/uploads/1/3/1/8/131856134/refod-gezikutotaxuxe-rawumipibosu-sezuxapewe.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/1/0432/4933/6483/files/greater_boston_real_estate_board_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/namulidokawobadanewivab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/warulunirurapesubimakoxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/koxexilosugalofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/the_social_network_subtitles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/pokemon_soul_silver_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/10630664248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/maxosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/50953496727.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 4

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_off000062a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 5464 bytes
SHA-256: d47bec3e2e000e3e57edb8d278e3e063f9ac7877c44dbd5ad3563292df7d7dda
font_01_sfnt_off00007552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7552 10336 bytes
SHA-256: cae606bbd91274049ef1b9f788856886e50d7da3e7dc7b76507a2bbadd93a338

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