Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e81f434f69510a…

MALICIOUS

PDF

35.2 KB Created: 2020-08-14 20:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e72bc90665332ee013d6a88d8102bcd SHA-1: de35b118f3effe73c1d3428ea1364314dbb25719 SHA-256: 18e81f434f69510a1082d1c8905e1199f5b60832cafc375191b56185b3a07c4c
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 designed to obscure the true destination. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document's primary purpose is to trick users into visiting malicious sites, likely for phishing or malware distribution.

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.com/pify?keyword=good+morning+shayari+photos+hd In PDF document text
    • http://files.praxsym.com/uploads/1/3/0/7/130739369/7658774.pdfIn PDF document text
    • http://sepik.traleeresponders.com/uploads/1/3/1/0/131070767/xesesum.pdfIn PDF document text
    • http://files.roxieriverawriter.com/uploads/1/3/1/3/131378771/ripib.pdfIn PDF document text
    • http://nikeje.brianmonteithart.com/uploads/1/3/1/4/131407370/63aff56ab59192.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/1/0429/5943/7975/files/suzusavobutodar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/61604993773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9988/5463/files/cy_country_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/11849640942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/47466974782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55781022724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/71143919190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/39079009700.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 7

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_off00004cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC8 5472 bytes
SHA-256: e3e3303377dad55d34f1a71b1328a1cde349620ed70d8a37a73078ade58f8f43
font_01_sfnt_off00005f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F44 9644 bytes
SHA-256: 4efa092934e9110883826ce6d2a1c4acec4d6aade184dc1d354d4f3126f3d84f

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