Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5fc23e7b3b66da5…

MALICIOUS

PDF

60.5 KB Created: 2020-08-19 09:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 308c945d3809483c1f0ddf115d3d7933 SHA-1: aeded85bf9c88b734d32706f724efcbe76109105 SHA-256: d5fc23e7b3b66da555f946673e47e1711ac43b087f85d41315465c64f4846e5b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing an 'onboarding template' and includes the malicious URL. This suggests the PDF is designed to trick users into visiting a malicious site, 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.
  • 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/pify?keyword=onboarding+template+for+new+employees In PDF document text
    • http://buleg.shipleyartstudio.org/uploads/1/3/2/6/132681670/cf0c407f56e.pdfIn PDF document text
    • http://files.cornerfrenchcottage.com/uploads/1/3/0/9/130969237/poremasawadox-jaset-tumen.pdfIn PDF document text
    • http://files.samrossman.org/uploads/1/3/0/9/130969614/wifaw.pdfIn PDF document text
    • http://rufateg.kangatrainingcaboolture.com/uploads/1/3/2/6/132696030/volez_lemawidowugexe_fugiregesiv_zolufula.pdfIn PDF document text
    • http://vavulij.monuem.org/uploads/1/3/1/4/131438175/gojifibu-zupazadumumo-nikurexa-xaradebapa.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/1/0428/9835/8432/files/75609531209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/killington_snow_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5736/1575/files/bansal_classes_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/21205016726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3907/1144/files/rizofamexega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/25187478216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/55042522926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/keferejenela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/lamojebazupilujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/77107972226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/wipezuguxego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8326/8257/files/bilbo_s_last_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/xufedasexafaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/jipolapokawenatapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5912/files/42735261537.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA22A 5724 bytes
SHA-256: 3519cb3d22d39a6c6351074d0ce1d3b2b85aee1199da65fce0faa88c3c7fc95e
font_01_sfnt_off0000b58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB58E 2268 bytes
SHA-256: 8770a9d16f6ec8ed1e04f7f31595c1fd3834ff76ff6f55291086ab87d6d749e8
font_02_sfnt_off0000bfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA0 10572 bytes
SHA-256: bf4b82f414d7bfef36d38b06accecab944d85047db049645777676ee1effc731