Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c2490d2dd4a827…

MALICIOUS

PDF

51.5 KB Created: 2020-08-18 19:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56d9af96e151d97c60316a000ed7d720 SHA-1: d118060b17fd10f065d0b884dcdd72f85d2fedef SHA-256: 67c2490d2dd4a8271b7c5f85520016dc3ded6e30881068e4a4dcd1d9b1cd0ab0
202 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 a phishing or scam attempt. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=gate+xe+2016+answer+key', which is used as a lure for a free download. Although no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.cc/pify?keyword=gate+xe+2016+answer+key In PDF document text
    • http://files.gobarespaonline.com/uploads/1/3/1/4/131453247/vepewesigojutav.pdfIn PDF document text
    • http://files.chunkyharmonies.com/uploads/1/3/2/7/132740172/4bf31.pdfIn PDF document text
    • http://files.antiquefairscornwall.co.uk/uploads/1/3/2/6/132682303/5383172.pdfIn PDF document text
    • http://files.playtherapyworks.com/uploads/1/3/0/7/130775503/xogixo.pdfIn PDF document text
    • http://files.oibaws.org/uploads/1/3/2/6/132682171/felopubap-mexor-jokapezupaj-zovemesituzifu.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/1/0433/0664/7707/files/mixed_tenses_exercises_present_past_future.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/5682213403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/jilerasuzawisukosonazunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/netufudiwuxirusavewerazan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3427/9062/files/liralu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3762/0386/files/nebibelinogubub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3482/7162/files/eragon_book_2_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/nafasofale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/aprenda_a_desenhar_pessoas_guia_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/gobuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/cape_cod_times_traffic_report.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000672b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672B 5484 bytes
SHA-256: ca68e4b8c751f0afc5a8bc70f8bd94ba556dd1dd894e26ed739a4149e6e21e34
font_01_sfnt_off00007a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 2320 bytes
SHA-256: 5e067315a2bd9524b6254977960f062bb129990ed69868068e29b4596197f3c8
font_02_sfnt_off00008456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8456 11860 bytes
SHA-256: 2fb046786815360951fd89ceaf14390aa79330ec41dc13f845f324c569c626e0
font_03_sfnt_off0000aab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB6 16224 bytes
SHA-256: a349519ccbdbca3d75704c2becf615ab37801eb1543272228454131dceb83acc