Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d306a56a6740152…

MALICIOUS

PDF

57.6 KB Created: 2020-08-03 05:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9843224402ab5f7e6aa993535b704023 SHA-1: a50704b442916d96eeab4cdb7506e84d0c337173 SHA-256: 6d306a56a67401522e539e643406cfb5d86640278af722aaefac6611ae60a569
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The SE_ADVANCE_FEE_SCAM_LURE heuristic confirms the document's intent to deceive users with a lottery or prize scam. The PDF_SEO_LINK_FARM heuristic reveals a large number of linked PDFs, likely to manipulate search engine results and increase the reach of the scam. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.com/pify?keyword=jasper+report+tutorial+pdf
    • http://files.mcroyalhotelpng.com/uploads/1/3/0/7/130775528/0d5d9bf9.pdf
    • http://files.csambhara.com/uploads/1/3/1/4/131438044/beposobejolejezu.pdf
    • http://files.jamestruslerphotography.com/uploads/1/3/1/6/131606201/witaxejuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/lojovepojarak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/josakozakagagavamuzefukus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/58140694987.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/70333386175.pdf
    • https://cdn.shopify.com/s/files/1/0433/7244/5854/files/gatazemovifinejiwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/22354082885.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/66987250791.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/42814516828.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c49.bin
43857842cb0b0db8d5c91e62c3a0481056bb94b62c12d32c4722435210120885		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C49 5024 bytes
font_01_sfnt_off0000ad6f.bin
895681bacad6c358c82bcdcdc4f62017e904ac2a84e6274b252825bed0eb16ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6F 13956 bytes

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