Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c127ec63a7073f…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 09:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91af2d7645154224c9fa133582b9f781 SHA-1: f8a64aaf62d251161e12bc7f21ab4e6a5cdec826 SHA-256: 94c127ec63a7073f205b359d0ed3f0917ebbf1937debb8995df5de7719885338
142 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=pdf+para+aprender+ingles+rapido'. The document body also contains what appears to be a call-to-action phrase, further supporting the lure. The primary attack pattern involves redirecting the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=pdf+para+aprender+ingles+rapido In PDF document text
    • http://files.uniquecleanz.com/uploads/1/3/1/0/131070356/3192917.pdfIn PDF document text
    • http://files.bandenservice4u.nl/uploads/1/3/0/7/130738482/sekedamajijov.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/1/0430/7877/9029/files/pifoxemisevuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6797/2513/files/beremomafepidawesusokuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/86946184179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/zuzixusitawunapad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/sejelodom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/nimugonopetolubudilabi.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000567f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567F 5212 bytes
SHA-256: cc846e746329fd2d22d524677c2447e3b698257e2a48f618fab7b1e953884844
font_01_sfnt_off0000683f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683F 2092 bytes
SHA-256: 13678a14b930e6d42e11b2ac41b13981c2c7f5938cc30cfb194ad51886f1f1dd
font_02_sfnt_off000071e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E3 9732 bytes
SHA-256: 2dd2511ee77c98996c144eaf25905a2724a71460b3c7547e377c2a5c79f8bbd3

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