Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ddc09db37cafae…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 01:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33eb9562c592e61ab1c4464f090b88ce SHA-1: a68c27db1083e6cc9de07c1a15128d9c367ded8d SHA-256: a2ddc09db37cafae42c5a62cfe303be4d100b9c580ee470c5200d8204964f8e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm, with the primary URL redirecting to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL as the primary malicious link. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link-based lure. The primary malicious IOC is the redirector URL.

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=large+format+digital+camera+brands In PDF document text
    • http://files.freespiritblog.net/uploads/1/3/0/8/130873995/8667886.pdfIn PDF document text
    • http://files.rodhillportraits.com/uploads/1/3/1/6/131606720/disizubasepi_sevaraw_getopolizitovo.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/1/0432/1109/6221/files/25814409499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/40129128264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/tidajoxuzoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1480/7974/files/coreldraw_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/receipt_voucher_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/74062202301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7744/1438/files/zofulukudekibixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/vapoxivazutumevonazuxopaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/42619084300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/order_and_chaos_2_guide.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_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 5424 bytes
SHA-256: b9c0a3c082443983354b2ab6b812956621ee256b0e41fe2ee6aeaa2f50f33f4b
font_01_sfnt_off0000932c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932C 10144 bytes
SHA-256: cc2298531fae182baccd55bfd150d85cc5a634a20866d6a9ef83b6d91600b5fe

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