Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e546ad3128f6b0…

MALICIOUS

PDF

33.4 KB Created: 2020-08-05 01:24:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5ffd68fdf5e2f5b3f2e01eaf58b4cf6 SHA-1: 38887e33227a43603fa259a07673c3e1533b2d6e SHA-256: 16e546ad3128f6b0367abe7a648f924d26f42a888cb8256bf07e81a9c72cb70b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL (https://ttraff.com/pify?keyword=autonomous+intelligent+vehicles+theory+algorithms+and+implementation+pdf). This suggests a link farm or phishing attempt designed to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=autonomous+intelligent+vehicles+theory+algorithms+and+implementation+pdf In PDF document text
    • http://files.85groupphotography.org/uploads/1/3/1/8/131856917/4203350.pdfIn PDF document text
    • http://files.madxllc.com/uploads/1/3/0/9/130969146/8852600.pdfIn PDF document text
    • http://sedijog.scorpiontv.us/uploads/1/3/0/7/130775422/bababinuzi.pdfIn PDF document text
    • http://files.ffijones.com/uploads/1/3/0/7/130776312/fuwepikagizadad.pdfIn PDF document text
    • http://files.glitterbartenders.com/uploads/1/3/2/6/132681749/3826409.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/1/0431/1751/0818/files/50337388852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9419/5870/files/76237678816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61053474184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6181/9045/files/bastien_piano_basics_primer_level_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/61267675832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/4d_cards_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/autoestima_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/wabusix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/3292973084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/fubezikemulelub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7461/6472/files/vitodelas.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_off00004406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4406 5720 bytes
SHA-256: c667e5f229fe0d63262bed00096ef972fa60a8be1fc72cc2f07736615e60161d
font_01_sfnt_off0000575e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575E 9616 bytes
SHA-256: 203a6653ab47c8a0e2943deb8ebe4039cedbc83d8396cba568b74304b0e02e58

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