Malicious PDF — malware analysis report

Static analysis result for SHA-256 508b9cf90349a424…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 08:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e4a82b95b386aff386c7dff4e77df67 SHA-1: ebf2d2466e63cb9d8e3893a28515035d6a41a550 SHA-256: 508b9cf90349a4248713a6987180034937f4d8ba992e5bd7248a11e7bdae5331
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though partially garbled, contains text related to a book title and a URL that appears to be the same as the malicious redirector. This suggests a phishing or scam attempt using a lure of a downloadable resource.

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.ru/pify?keyword=practical+aviation+security+2nd+edition+pdf In PDF document text
    • http://files.aroundandbackagain.com/uploads/1/3/0/7/130775228/9301868.pdfIn PDF document text
    • http://files.plazacateringboston.com/uploads/1/3/1/1/131164425/leboginojurov.pdfIn PDF document text
    • http://files.aliciavilas.com/uploads/1/3/0/9/130969545/0960633a.pdfIn PDF document text
    • http://files.psusdhistory.us/uploads/1/3/1/1/131164204/8ccaa3e6d54ee6.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/1/0440/3272/1046/files/pikilaseto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/xudolazobusurusafizoxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/missouri_sample_ballot_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/lidazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0270/7615/files/blank_calendar_may_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/96782926012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1856/7335/files/wugaxozapodonabizulorotik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/sedoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/ds2_cheat_engine_item_swap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/51352055655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7156/8040/files/54874712545.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_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5444 bytes
SHA-256: 6ff8ff541d8de375d3c6403c22eca1307b0dfc395c02035348f6be5b826c2377
font_01_sfnt_off000070e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E0 14940 bytes
SHA-256: 0fe3007a668c4822b21266fe4883a2f9d316cec48984debb2d53fa87f786fc3e

Open this report in the interactive analyzer, or submit your own file for analysis.