Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19825b623c627f5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-07 19:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bce38e0fbc9f7f97bac89bfccf2f5d0c SHA-1: 5cac8323411500a0e75e82128ba946bf0348e5c6 SHA-256: e19825b623c627f51a7e1c5e9e4ca38f56c6fd8bb1d5627ff27e338850bf2659
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body, though partially corrupted, contains the same URL and a reference to "vocabulary games esl pdf", suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, which are likely part of a SEO-based distribution scheme. No scripts were extracted from this sample.

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.cc/pify?keyword=vocabulary+games+esl+pdf In PDF document text
    • http://files.drcoreycipolla.com/uploads/1/3/0/7/130740264/kataradimex.pdfIn PDF document text
    • http://files.yoursongstory.com/uploads/1/3/2/6/132682528/sijalerajo_duruvolesabej_duvuponeno_ronuxufenov.pdfIn PDF document text
    • http://files.chattaction.org/uploads/1/3/0/7/130775027/wedurixivib_bumumon_vibilamed_devatipo.pdfIn PDF document text
    • http://files.missoryansclass.com/uploads/1/3/2/6/132682106/pegeze.pdfIn PDF document text
    • http://files.everydayava.com/uploads/1/3/0/9/130969761/mobaxerovaxefo-lonufafulot-momaxosisonukum.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/1/0434/5770/8193/files/pewarizoresawiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/88220731665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/wimixoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/broken_vessels_amazing_grace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/tizuvunofogusoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5249/9095/files/83658572098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/nuxozofujujariwejibosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4975/3507/files/gaxaxafilisulegejunowose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xagene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/19762174323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/863-_825-_1348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/rusiperebalanagofunal.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_off000069c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 5684 bytes
SHA-256: 140490ec8366fead4eb001fd671c1a2b3a57e8c6be6b9e8cebbb0bbd81187b98
font_01_sfnt_off00007d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D12 10148 bytes
SHA-256: 19acae300a473520e366fbf823c19d0adc000bdef61a44e6cbfb358bf58f0cbf

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