Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f329e9e3812d6f…

MALICIOUS

PDF

86.9 KB Created: 2020-09-02 01:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 616e530ee0973c81e7dbad68744beadd SHA-1: 14d0934f39598331a985ae41b641f2adea3c8b15 SHA-256: 27f329e9e3812d6f4fb534ea0a2a767f3449be12ac7649fd33297e4ff1a7e121
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the string "Java tutorial apk free" and the malicious URL "https://ttraff.com/wix?keyword=java+tutorial+apk+free", suggesting a lure to a malicious site. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute the malicious 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.com/wix?keyword=java+tutorial+apk+free In 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/1/0430/4188/2265/files/fobia_social_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5460/files/rujumebetekosowagobolarol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/laleniwezir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7489/6281/files/fitutozofarifesubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/story_elements_worksheet_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/jspdf_autotable_column_width_auto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8918/2376/files/wopebeguruludi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/pugiwukelerafapugosomepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0111/6833/files/cambridge_practice_test_for_pet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/21418351882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/kaspersky_activation_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7254/4150/files/arabya_rajani_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/abstract_algebra_an_introduction.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_off000102e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E9 4828 bytes
SHA-256: 354cec244180f0aa6c00eb76869ab3d92ba3dade5caffaed34412e4a04008e11
font_01_sfnt_off00011372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11372 1804 bytes
SHA-256: f101fc3023143cbc24e87e2583c027b8b5ab7dfb9504abb66ff99af634bcdac9
font_02_sfnt_off00011c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4D 15956 bytes
SHA-256: 6a92a57510208bbdadd8025e8e23dfa49aac1fbac3fc791033a5b74bf8ef57fa

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