Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa7c15fe7db9aa3…

MALICIOUS

PDF

58.9 KB Created: 2020-08-04 15:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: faa23ebd8c8ecd12c281b1713833c540 SHA-1: 8dd246be5e73eb2fe15fae30a6aae8ee06b1c68d SHA-256: 5fa7c15fe7db9aa33e6f71d824e76772f029b549f286e1418cbc42e3f5f93e74
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract search engine traffic. One prominent link, https://ttraff.cc/pify?keyword=definicion+autoestima+psicologia+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure.

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=definicion+autoestima+psicologia+pdf In PDF document text
    • http://files.lochgoin.com/uploads/1/3/1/6/131607239/gutexal.pdfIn PDF document text
    • http://files.greenharboryc.com/uploads/1/3/1/0/131070826/3516765.pdfIn PDF document text
    • http://files.persimmonalleypress.com/uploads/1/3/0/7/130739991/zopov_gavim.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/1/0430/0252/7895/files/betetuxiguverixumuzapuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/71691251088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/68920794535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/71288841418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/sixumaxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/27469600392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/13873470312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/53078113072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/zasalagewobovajezotubik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/boxodoguten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/74382966923.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_off0000a657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA657 5376 bytes
SHA-256: fb5ba86e32bc6348f41c64926e3195360e0163be3d48548cf6b9a0cd44cf1888
font_01_sfnt_off0000b8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A1 11032 bytes
SHA-256: 030fcfd51825503b2a837e6927c8cdfc5a193e4aea4f6e24a25658a6cc7ed889

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