Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4cfd6e727ad960f…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 16:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e6ee04f372e2f7742b8cba5a077530d SHA-1: 44bf4a4ca939828bbfacb53508b9ddd96bddf600 SHA-256: e4cfd6e727ad960fea49d31b6deb5020a340c3df5f63158512e0b8dd8073ffe2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=split+merge+pdf+free`. This link is presented within the document body, disguised as a free tool. The PDF also contains a large number of external links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to increase visibility. The primary malicious URL is the most critical IOC.

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=split+merge+pdf+free In PDF document text
    • http://files.f-cubed.net/uploads/1/3/0/7/130739146/d0e5f293d685945.pdfIn PDF document text
    • http://files.stjamesbands.com/uploads/1/3/1/3/131379113/wujalapatiweb.pdfIn PDF document text
    • http://kelapu.dumpsterrentalnaperville.net/uploads/1/3/0/7/130776791/nisusad.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/1/0427/8275/2935/files/xalorumerejasegup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/29473971945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/1221987438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/administrative_office_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/bartholomew_and_the_oobleck_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/vumojipikunabulirawowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/poeme_l_albatros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/dosis_antasida_sirup_anak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/157454649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/88246546322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/android_java_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/boundary_layer_thickness.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 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_off00004f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F84 5076 bytes
SHA-256: 820c45e9562da0be18ad6c72fbd4053e6b492469f33539ee50cafb3b2be08fd9
font_01_sfnt_off000060b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 10084 bytes
SHA-256: e451bd464afacf2fc90c6f1fbfa0e1f0c19405b8ea6f71fe95b8adf2842b2692

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