Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52f86343b07a2c7…

MALICIOUS

PDF

45.1 KB Created: 2020-08-27 15:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a8530b6831fc4928af02fc0cad38238 SHA-1: 5d7dd624d7e673d5b57c2e6ed06cacb78a1b5e75 SHA-256: a52f86343b07a2c7f333a30ed5e7324c1635dc6df20c0c24516c8b8f84f66920
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the same URL, suggesting a lure to a malicious site. The presence of a link farm further indicates a malicious intent to distribute content or traffic to potentially harmful destinations.

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.me/pify?keyword=women%2527s+weight+lifting+routine+free+weights+at+home In PDF document text
    • http://dezus.springfieldfrontiers.org/uploads/1/3/1/1/131164250/boteja.pdfIn PDF document text
    • http://wazekivej.seanhuttonmusic.com/uploads/1/3/1/4/131407668/bibemozaja.pdfIn PDF document text
    • http://files.picsaacademy.com/uploads/1/3/1/3/131379873/fevobid_xigin_kotib_podotaneduduz.pdfIn PDF document text
    • http://files.maximiliangoetz.com/uploads/1/3/0/8/130874238/tufesuleduzanaruwas.pdfIn PDF document text
    • http://befafodo.tomandcath.com/uploads/1/3/1/4/131406286/7731121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7437/files/tailoring_cutting_and_stitching_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/ruwurob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4280/6680/files/jukokugufozazadazokamena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6754/6527/files/ocuklar_yazdrlabilir_kolay_ncil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/lightroom_2017_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/dulorefegisatosisobiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/bixazewuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/kaufland_catalog_online.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000633b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633B 5200 bytes
SHA-256: 7c1f7b08af0e61653b9fecfc1e21e2bdc0da24a7ae15e434daf3948786204c4a
font_01_sfnt_off000074d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 10752 bytes
SHA-256: 499b2e792ceda545707ac7bb26098eae40b87a2c6f3b8dbd3ed7826bdd707d59
font_02_sfnt_off00009950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9950 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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