Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead72b2bf2450484…

MALICIOUS

PDF

45.6 KB Created: 2020-08-20 20:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32ab00cd4442e42cb192dcd964299110 SHA-1: 06843ddbc42899162953a0dec7f3693a304d8abb SHA-256: ead72b2bf2450484e3d40117b43040eab16ec3428b930def824f5b0172870127
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Contents page design template' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=contents+page+design+template
    • http://files.sareeduniya.shop/uploads/1/3/1/8/131856706/bupipakazulurew.pdf
    • http://files.austindemaille.com/uploads/1/3/1/4/131453522/6794a3b.pdf
    • http://sivudagul.development12508.com/uploads/1/3/2/7/132740978/1660679.pdf
    • http://files.northshorejewish.org/uploads/1/3/1/4/131453393/85393d098.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0528/files/12045938301.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/pivuwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/rurelebawixinitefelafapip.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/gudajut.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6572/files/70420089457.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/77269712068.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/libro_mordiendo_manzanas_y_besando_sapos.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/gosinovi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3373/8911/files/14977445710.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000625d.bin
09911ddc9142ca98f381e366279d7551cdf1dbfaad442b7eb2feaa74dcaaa382
pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 4992 bytes
font_01_sfnt_off00007340.bin
dbaceb5e437bfe73c3824110d42097ff4749321217e26b7b80878bd3874177eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7340 12768 bytes
font_02_sfnt_off00009bbd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBD 4324 bytes