Malicious PDF — malware analysis report

Static analysis result for SHA-256 185065af452e3875…

MALICIOUS

PDF

43.6 KB Created: 2020-08-13 22:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5992eebc626318e54b17b530e39ee9ed SHA-1: 2096adde9fa4199da64adb79966785329dd966f8 SHA-256: 185065af452e3875d668c43e599b9d77bb275e0b287fbb8eebc46560877239d5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a phishing or scam attempt. The document body text and embedded links, such as 'https://ttraff.com/pify?keyword=chess+puzzles+mate+in+1+pdf', are designed to entice users to click through to potentially malicious content. The ML classifier strongly indicates maliciousness, and the presence of redirector links supports a social engineering attack vector.

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=chess+puzzles+mate+in+1+pdf In PDF document text
    • http://files.greatheadma.com/uploads/1/3/1/4/131438891/9f271.pdfIn PDF document text
    • http://lupejek.jci-gardena.org/uploads/1/3/2/6/132680813/2489f40d0d4ff.pdfIn PDF document text
    • http://kigutu.creativedentaldesignsaz.com/uploads/1/3/2/8/132814930/nufow-tovomu-gejusaza.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/1/0431/3173/2132/files/tasavemolezimaduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/home_beauty_and_the_beast_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/fatotifudobobanofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2960/files/sign_o_the_times_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3365/5446/files/vapamabuxuxonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/72530765449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0285/files/aphasia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/14550759222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/albert_camus_sisyphus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/9249325924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9681/6282/files/44434206265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/phonemic_chart_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/72492899467.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 4

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_off00006c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C59 5192 bytes
SHA-256: 5496cf18092b8018bbc66cd178a710cc7564ba80a5ce3745860f2e7570e0b6b1
font_01_sfnt_off00007df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF7 10436 bytes
SHA-256: 40a333901b5733caeb5b00bfeeabbab0a4fc78bd3b472a850c70c53ef8c6eee0

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