Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff671a53eef9125…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 23:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a94a7238dcfb000525874dee6f39028e SHA-1: cc022c5cbf2504f3bbb4bd795d00d823119fe0b7 SHA-256: eff671a53eef9125443722531dcd9f7a91c7cec2324888c4873ca0249bb3411a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'commercial storyboard template pdf' and the malicious URL. The ML classifier strongly indicates maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the intent to redirect users to harmful 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=commercial+storyboard+template+pdf In PDF document text
    • http://files.hmonghistorycenter.org/uploads/1/3/0/7/130739287/xudasuzovezururutu.pdfIn PDF document text
    • http://files.kerncanineactivities.com/uploads/1/3/1/3/131382239/fifubiratujo.pdfIn PDF document text
    • http://files.fleetojesus.org/uploads/1/3/0/8/130874526/4ee9140.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/1/0427/8213/0332/files/duwibevamipupibejet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6357/2635/files/mazotisoribatixubejasozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/begekuped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3350/files/mufabik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2074/5893/files/63183631410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/convert_to_word_app_for_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/wefixabezaxesawap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/gegefegudigetekafetajuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/mysql_split_string.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/sifupejefepenawevezitoxod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/89648678160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/black_s_law_dictionary_tenth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/58842975679.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: fleetojesus.org 3 samples

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_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 5448 bytes
SHA-256: 5ff8f1a5c31d9ad5cf09334ae4c428ba3c59a6192d044198fe9fea65ad3530ae
font_01_sfnt_off000074d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D9 9780 bytes
SHA-256: 99aba4a2729fc2376a173865102671acd54429f575d93dc153bf75a2a4fe0b90

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