Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6d4bcc0e9032f4…

MALICIOUS

PDF

39.0 KB Created: 2020-10-07 13:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e727b6d1834940a0dba74f6825d934fe SHA-1: 63aa96a62ae09ad3da3a73607833e22d7514a58a SHA-256: 4f6d4bcc0e9032f46dfcf66c7645c1b3a9b876877fc60b1bc5946c91ceb54729
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The primary malicious URL, https://ttraff.com/pify?keyword=golden+state+fruit+reviews, is a key indicator of malicious intent. The presence of many Shopify-hosted PDF links suggests an attempt to obscure the true malicious infrastructure or to leverage SEO tactics for distribution. No scripts were extracted, but the PDF structure itself is used to host and redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=golden+state+fruit+reviews In PDF document text
    • http://files.siceyourlife.com/uploads/1/3/2/7/132712508/1decdb041c0c.pdfIn PDF document text
    • http://files.danyeldevilliers.com/uploads/1/3/0/9/130969915/safukixafaxeve.pdfIn PDF document text
    • http://files.cedarcreekarts.org/uploads/1/3/0/9/130969879/woduzuletotuleb-dipolomutoni.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/basovogexu.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/38339789278.pdfIn PDF document text
    • https://site-1037057.mozfiles.com/files/1037057/88096815818.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/gopisalal.pdfIn PDF document text
    • https://site-1036950.mozfiles.com/files/1036950/49929617388.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/1/0481/5244/5079/files/98182137463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0859/7927/files/remington_rolling_block_32_rimfire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5812/1883/files/ib_history_hl_ia_rubric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3614/7363/files/70_mind_over_matter_poe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/counseling_reflection_of_feeling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9692/3030/files/59935978561.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0B 5084 bytes
SHA-256: b1f6d8097e5e16cb908326d762a5f3360b517d4d04d6e580bed17a91fb81adc6
font_01_sfnt_off00006c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7E 10288 bytes
SHA-256: b31b9194832716993ea4fb08d5c81333c23ed77a445ce11d0992bca084f98a26

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