Malicious PDF — malware analysis report

Static analysis result for SHA-256 57bc7b487f12d438…

MALICIOUS

PDF

74.3 KB Created: 2020-08-09 15:34:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e1ce48b54351feaa34e83b70ed57546 SHA-1: d713e169e69f6cbb37d302bf5b76d2c292f4c7ab SHA-256: 57bc7b487f12d438272d050b7f1d954400169201e3a381d2992e05e731f754f1
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also hosts a link farm, as indicated by PDF_SEO_LINK_FARM. The document body, though heavily obfuscated, contains the URL that triggers the redirection. The presence of a visual download button lure further supports a phishing or social engineering attack pattern.

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=agile+software+development+with+scrum+ken+schwaber+pdf+download In PDF document text
    • http://files.stephanieclayman.com/uploads/1/3/1/8/131860787/torobux-judedojum-ruvoni-tazat.pdfIn PDF document text
    • http://files.dunphyshandguntraining.com/uploads/1/3/2/6/132681566/d354c601d.pdfIn PDF document text
    • http://files.thecasualcreative.org/uploads/1/3/0/7/130776023/5a04655b65a.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/1/0433/9200/8357/files/gapebovolexed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/zevuduxaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6525/2771/files/tinkers_construct_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/educacion_cristiana_en_la_edad_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57896919986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/56078697521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6128/4757/files/long_445_tractor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/51456637241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/63257385329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/14153914499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/mafunisotawade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6255/7856/files/19065381355.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 5912 bytes
SHA-256: 07a3f4513d1e49325f2d28521d9d5bce07fb01f791c352b2ed98eac585108eb4
font_01_sfnt_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 14916 bytes
SHA-256: a51769df62c6b3480103befbc67a09d0bb548f2d42d5a6e204eb2272b50876e7

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