Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b71aeabf3679115…

MALICIOUS

PDF

42.4 KB Created: 2020-08-20 21:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f3eac1b760dfe604e427d53932b4998 SHA-1: bb45ebd2cac9723037299a0b0f55f76f809f92e9 SHA-256: 7b71aeabf3679115f942a184ba69e24d4e8689cf26ac8c22a8b49bda54413416
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URL 'https://ttraff.cc/pify?keyword=reporting+binomial+test+apa' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent. The presence of numerous external links, many pointing to Shopify domains hosting PDFs, suggests a coordinated effort to distribute content or lure users.

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=reporting+binomial+test+apa In PDF document text
    • http://files.kil-n-it.com/uploads/1/3/2/8/132815318/1950599.pdfIn PDF document text
    • http://totadoxew.authorrobertmuir.com/uploads/1/3/1/3/131382486/6729201.pdfIn PDF document text
    • http://files.blessedimp.org/uploads/1/3/0/9/130968996/wimosife-bazotakexijixa-dedesanamop.pdfIn PDF document text
    • http://votikagup.kisdesigns.net/uploads/1/3/0/8/130873890/jujubaxa-nejonuta.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/1/0431/6482/7805/files/2620673868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5644/files/oh_ho_bandeya_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/tutorial_dreamweaver_cs6_lengkap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/xirawedupekizodij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/11189188904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/bsc_nursing_admission_form_2019_maharashtra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/28501888824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/keto_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8438/7238/files/80601858055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/78586034892.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_off00006837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6837 5288 bytes
SHA-256: 3a64242b0f9e9cf86149043fdb0133385041e5a98eaa0c30126f57a5929e727e
font_01_sfnt_off00007a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1B 10084 bytes
SHA-256: 70c1133c9c31cbd764e2cb78c03313dba0ac9283667cfd7b5e69a20d4c53e4f8

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