Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18c55193bb4be5e…

MALICIOUS

PDF

44.6 KB Created: 2020-07-30 23:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9422060ab724ae3ca5cb35f6dd08505 SHA-1: 11601437385b8fab4c5cc6c84607314152c3170a SHA-256: f18c55193bb4be5eff78a989976d3076525656327c3397143804d835ebb1e22c
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a redirector link and a link farm. The embedded URL points to a redirector service, which is a common technique for delivering malicious payloads. The presence of a visual download button further supports the lure aspect of the attack. No scripts were extracted, limiting the analysis of the payload delivery mechanism.

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=anodea+judith+libros+pdf In PDF document text
    • http://files.uniqueintheuae.com/uploads/1/3/1/4/131453605/1866900.pdfIn PDF document text
    • http://files.michiganeastapts.com/uploads/1/3/1/8/131857565/natuf-zulov-xavedusiru.pdfIn PDF document text
    • http://files.ballfamilyqt.com/uploads/1/3/1/6/131606280/sitevotukurejo_ramimirunaja.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/1/0434/1058/7800/files/27991186227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/76968011793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/24772277173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0388/6238/files/17976328587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/mofatasavamajoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/43612352452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/18231466506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/kodedewujoletakelozasur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7794/1913/files/84704800023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/gerolegudedotunene.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 5

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_off00006ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5216 bytes
SHA-256: 1d536a1fe8f60d24cfad7e67eade6c67b51455cfe3e148278a5e460a33229d38
font_01_sfnt_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 10616 bytes
SHA-256: 6c8870d512130a7d471746c8771d2861e90df90b59a81a8bfb155572683301ee

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