Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aaef89c9948f1a3…

MALICIOUS

PDF

39.9 KB Created: 2020-08-13 08:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23f11c6e7abd9434008d390669ae059e SHA-1: e44b729557d886c9f04f3707354a094aa0382c54 SHA-256: 9aaef89c9948f1a372fe39a809616a5a137ea43ed21319dcfd44b4da88a3c5d9
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, indicating an attempt to lure users to malicious content. The document body and heuristics suggest an advance-fee scam lure, promising a free download. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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/wb?keyword=e%20business%20pdf%20free%20download In PDF document text
    • http://files.oxfordcountyhouseclearance.co.uk/uploads/1/3/0/8/130814238/movotenowude-jovibovufusuwu-gikoposotin-sikur.pdfIn PDF document text
    • http://files.drdavidnjacobsen.com/uploads/1/3/1/4/131453199/2571219.pdfIn PDF document text
    • http://gafafef.giveitaway.net/uploads/1/3/1/4/131438800/b29d5f81d.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/1/0431/6784/2465/files/55171903982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/craftsman_radial_arm_saw_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/zuzoxamisudesolujajidej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/swokowski_calculus_the_classic_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/gathering_storm_40k.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2174/files/zubinepofarobegedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/27794635823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/nakipopopemijotamimiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2992/1943/files/xusunepenebareligifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/animal_farm_summary_chapter_1.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 2

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_off00005e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 5224 bytes
SHA-256: 2a44c6e67761fd365bc02e6e4b5f224a8083ca23e62228ef305bd26f08db66f3
font_01_sfnt_off0000706c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706C 10120 bytes
SHA-256: 506c3ce011abaf92133fcbfcbd0774ac0fb91a457784bb338fe1551b2396ac0a

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