Malicious PDF — malware analysis report

Static analysis result for SHA-256 49944f534997770d…

MALICIOUS

PDF

59.6 KB Created: 2020-08-14 05:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbb2093270851391ef161ff26b3a82a8 SHA-1: ef248fcd6c94d42dbf8bf055b2423f17e0046c8e SHA-256: 49944f534997770d69c4e2595682a75672ecf97c389af820485f54d1a7298ee6
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=kramer+via+campus+datasheet', is identified as a malicious redirector. The document's content, though heavily obfuscated, includes this URL and other Shopify links, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=kramer+via+campus+datasheet In PDF document text
    • http://files.inekemacnab.com/uploads/1/3/1/4/131453543/2589407.pdfIn PDF document text
    • http://files.alohaestatejewelry.com/uploads/1/3/0/8/130873877/b366ce9.pdfIn PDF document text
    • http://files.connectpreschool.com.au/uploads/1/3/1/6/131606073/c4bac82337d.pdfIn PDF document text
    • http://fulej.genewhitacrecpa.com/uploads/1/3/2/3/132302939/9152a1eda5de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/common_interview_questions_for_teachers_and_how_to_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/eugene_hourly_weather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2416/1704/files/cambridge_english_readers_level_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/saloxatuwanararaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/cambridge_igcse_business_studies_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/payroll_management_system_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/99117617843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7672/8485/files/pilot_interview_preparation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/8451619275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/9099140053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/jackson_a_user_s_guide_to_principal_components.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/39129267274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4938/5110/files/.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 4976 bytes
SHA-256: ce0b152047b19c4b40460fd03ff25cc5397d93809a376eff5889d8791960f02c
font_01_sfnt_off00008119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8119 11452 bytes
SHA-256: 6de5fe77ee7ec02dc058f0151adfad9c0080604316688ba236d4a143377cd3c0
font_02_sfnt_off0000a167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA167 15260 bytes
SHA-256: 71a07cc0feaf1b3a36d8bcaa0263bef3a7404d7e4b56bcbde57f361b31997ea2
font_03_sfnt_off0000d086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD086 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361