Malicious PDF — malware analysis report

Static analysis result for SHA-256 48dfae417d13c248…

MALICIOUS

PDF

40.1 KB Created: 2020-08-20 04:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6af163925b63eb32a69c9fc497588ad SHA-1: 73f1c00ac5ce97c111ef22e5226ad335bd6fe69d SHA-256: 48dfae417d13c248ca7f5e9182f345a5f206989f2c0d6f01ef1f1542f9e6e6bf
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily corrupted, contains text related to 'Android 8.0 Google Play Protect' and references to wkhtmltopdf, suggesting a lure related to device security or updates. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious.

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=android+8.+0+google+play+protect In PDF document text
    • http://gurig.anrcdesign.com/uploads/1/3/2/6/132682883/kedavezisu.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/1/0434/4391/2856/files/83784887116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/c_to_f_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/dawn_of_war_soulstorm_trainer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9133/6099/files/alternative_forms_of_tourism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/boticario_catalogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/16690292114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3869/3797/files/77294297381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/poxuzot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/wejoziwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/88321221709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/wetherspoons_menu_nutritional_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/wazefogetexubumuzukowaf.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 1

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_off00006042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 5520 bytes
SHA-256: 034f3dd65c6d03acbb4213eeca8b345526e803d7a3126d58bc5e2b0084043df8
font_01_sfnt_off00007319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 9636 bytes
SHA-256: fa8467690ae3c5635ef279400aa50f5373615f11ce289e77dcf8d3c0b13b68cf

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