Malicious PDF — malware analysis report

Static analysis result for SHA-256 1529d92ec2aeb743…

MALICIOUS

PDF

113.2 KB Created: 2020-08-08 16:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3d077e22b675c9896f4cdb7069819c7 SHA-1: 57159544b4eccb7070c1514268052d0454939f5c SHA-256: 1529d92ec2aeb7438ea44d19be9bc1b63522668607b50df273940491955c1951
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=mario+vargas+llosa+libros+pdf`, which is flagged as malicious. This suggests a phishing or scam attempt to trick users into downloading further malicious content. 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=mario+vargas+llosa+libros+pdf In PDF document text
    • http://dobutite.brittanysflowerfarmandstudio.com/uploads/1/3/0/8/130874359/lefefetiremiza.pdfIn PDF document text
    • http://files.unklemikesplace.com/uploads/1/3/1/6/131636914/83912.pdfIn PDF document text
    • http://files.thesyncretistrealm.com/uploads/1/3/2/6/132682124/d2880390ec.pdfIn PDF document text
    • http://files.healingisappealing.com/uploads/1/3/0/7/130738554/b45144029.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/1/0430/2825/0781/files/baxonubisonewijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/bncc_2020_baixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/wilowumuzajobijik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6896/4505/files/37448560034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/xofonowitabezopop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/latokepasagemetuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/61133851670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7003/6904/files/anaconda_spyder_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/xixesukagixawufitet.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_off00017af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AF1 5416 bytes
SHA-256: 81f82828109b3b2199c80647d26adab074c77378111802ec8962724650e36b8c
font_01_sfnt_off00018d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D7C 12448 bytes
SHA-256: 87c5fbb5cfee502b9c93218fb3331574cd04108a422f01a2a0d5bbca4dc5710e

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