Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88c809c1c2ec6d5…

MALICIOUS

PDF

43.6 KB Created: 2020-08-07 02:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10b1922e1d650f065644e17e202084b4 SHA-1: 51d5aac7a00a25693952a82b92dc9765c47bf99e SHA-256: e88c809c1c2ec6d52f87b204333920f4f928ee254f40711d354d281331c5df77
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect the user to a harmful site, likely for further exploitation or phishing. The presence of multiple shopify.com links suggests a link farm for SEO manipulation to distribute the malicious PDF.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=las+cavidades+del+cuerpo+humano+pdf In PDF document text
    • http://files.alisoncowan.co.uk/uploads/1/3/0/9/130969508/powos.pdfIn PDF document text
    • http://files.avinumalkeinumessianicsynagogue.com/uploads/1/3/1/4/131436978/maxexu.pdfIn PDF document text
    • http://zuzomegid.acpnutrition.com/uploads/1/3/0/7/130775350/kubogufisop_mizajakasi_lazemufomipor.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/1/0429/4007/2092/files/tevawumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/lagorinatezifoxebelativ.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/sotuvavudokapibopoxoxige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/desarrollo_evolutivo_del_cerebro_humano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/55766734487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/92311209843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/kigebuzor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/pugifigegoperoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/zulonolasaguxoxukir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9449/9743/files/6249969522.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 6

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_off0000697e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 5396 bytes
SHA-256: 437c206f75e4f2013878e80eb4773f9ec7b17e6d4758dc6c0e3b6ac25f57a1ab
font_01_sfnt_off00007bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB9 11540 bytes
SHA-256: f3c6fbbb1e0933ff15b2b660668dd92fa9d8712b9e798d2e920614303c03f0f1

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