Malicious PDF — malware analysis report

Static analysis result for SHA-256 3125aa493ff2dcba…

MALICIOUS

PDF

42.5 KB Created: 2020-08-12 20:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61d733716e0216692b594fd8619169a3 SHA-1: 6a5bfa39c1b3def6db83ebde6d6e833d30819dc9 SHA-256: 3125aa493ff2dcbaf5f747a6d5facf93bc46ee7bd4121b72a318ccd8b0e74e91
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a title related to social stratification, likely a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=functionalist+and+marxist+view+on+social+stratification+pdf In PDF document text
    • http://nubapajaz.homehomeschool.com/uploads/1/3/1/4/131483027/jepafapuma.pdfIn PDF document text
    • http://renotoz.inspiredleadershipcoaching.net/uploads/1/3/2/8/132814930/8717151.pdfIn PDF document text
    • http://files.bridalgownsnh.com/uploads/1/3/1/4/131410007/9604557.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/1/0430/9758/7861/files/iccid_number_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/pdf_to_word_converter_nitro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/xulepipatinuxepimukite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/port_clinton_fishing_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/beporir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/bams_1st_year_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/sufigixubamowakusanov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7298/7046/files/nunerizakotekitopodenuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/99810512996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/javevividesumiduvim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/51669260036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8093/1733/files/tibalogifuwusasuzor.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 1

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_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 5476 bytes
SHA-256: 8706ae49f1a0af3194f009325c0a936fc81398cbba55acf43b551cec7986cd40
font_01_sfnt_off000078f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F8 10428 bytes
SHA-256: 97c02c0e1b87674ba2c0c8ea3aaa8343a465538c8af6ffe003b22a601c5cb154

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