Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de0998f787d7f4e…

MALICIOUS

PDF

40.8 KB Created: 2020-08-23 10:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c883fe4085ba8fed40ba70d1fcc4b5d8 SHA-1: 1e5679cac0f12025f4878aff9fae9923c57eb388 SHA-256: 4de0998f787d7f4e14ce7b21cfd4775635443d06c475479a243b9da7984dcbf2
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a game and the PDF's creation tool, suggesting a lure. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector confirms a high likelihood of a phishing or malware delivery attempt.

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=harder+than+you+think+game In PDF document text
    • http://files.kristynwalker.com/uploads/1/3/2/7/132710638/lozamu.pdfIn PDF document text
    • http://files.fxbrwanda.org/uploads/1/3/1/4/131407629/pubovijasexix-sefofaxapimubu-kajipowaz-mobabusoteguz.pdfIn PDF document text
    • http://wewut.oceanassassin.com/uploads/1/3/1/3/131380755/7d720c.pdfIn PDF document text
    • http://files.celebrateyourstories.com/uploads/1/3/2/6/132681342/2837202.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/1/0434/1855/0430/files/lonely_shepherd_free_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3729/3718/files/46624515467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/49836552634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/pitaludaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6818/4994/files/best_unlocked_cdma_android_phones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/flamenco_guitar_scales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/28182220399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/pukeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/jejimij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/35098309958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/zujuleta.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_off000062b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 5156 bytes
SHA-256: 730687b434e21f967f190040fb1fe0db83aaab4129f70d20aa273c2e0e35c7a3
font_01_sfnt_off0000741c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741C 10120 bytes
SHA-256: 4ada44df66062e2a42643b7f296c9f70a5da291de26ece7423c5d54aa28277b1

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