Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc48079ed24148c…

MALICIOUS

PDF

38.6 KB Created: 2020-08-11 15:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d18fc2ddcfcb5ba8af8a640b9e3f4b3 SHA-1: 6fcfb3f191fc3f944a8f93e02972fa925992d360 SHA-256: 9cc48079ed24148cd9826c65eb225c7a670bd48eff8203edf7feffad0e86b6f9
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'aldine isd calendar pdf'. The primary attack vector is likely a phishing attempt to redirect users to malicious content via the provided link.

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=aldine+isd+calendar+pdf In PDF document text
    • http://files.bate-field.com/uploads/1/3/1/3/131398133/womuj.pdfIn PDF document text
    • http://files.huskermotorsports.com/uploads/1/3/1/3/131379801/15e634.pdfIn PDF document text
    • http://files.affordingsurrogacy.com/uploads/1/3/1/1/131164048/xezimepuma_matez.pdfIn PDF document text
    • http://files.ohiomorganhorse.com/uploads/1/3/2/6/132682739/zosaramojarilet.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/1/0431/5981/4306/files/36095293784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8197/files/catholic_latin_prayer_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/vugujinax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/sony_explode_car_stereo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/40683743939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2017/2960/files/best_reader_android_no_ads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6662/1094/files/63554541026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/rapejipupexadapozanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/togutipuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3676/9437/files/vetukonesufokudupagipor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/cpr_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/jiwalazagelokafexatekewim.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 7

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_off00005971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5971 5140 bytes
SHA-256: ae4fc8ed9e1c4a9c25c3c7d5a12e1697b438aab1ec5e600b2b741dcc13abb751
font_01_sfnt_off00006aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEC 10256 bytes
SHA-256: e94537687944514922fc8931c263b7b5355671a69377febdb19bef21286db728

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