Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b4555ef84aba22…

MALICIOUS

PDF

49.0 KB Created: 2020-08-30 22:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29414d1330984dc9356572cb35806e7d SHA-1: 591f70bea6d26e8ee7bb662f238e7416d541962f SHA-256: e0b4555ef84aba225fe925e6fddef3e3811955f376dcd381e7abe01f60cb0fb3
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an advertisement for hotel sheets. The ML classifier strongly indicates maliciousness. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely to improve search engine ranking for malicious lures. The primary malicious IOC is the ttraff.link URL, which is known to redirect to further 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.link/wix?keyword=lavish+hotel+luxury+sheets+9900
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/lawudi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/algebraic_expressions_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/5072/7584/files/wuwolugef.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/23707369938.pdf
    • https://cdn.shopify.com/s/files/1/0429/4508/5606/files/latidir.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/jevuvuzile.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/lobinekafetimedaxojogenox.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/88748697543.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/login_to_my_adp.pdf
    • https://cdn.shopify.com/s/files/1/0455/4273/6037/files/31057108755.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/mafiloduperewifij.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/antihistamine_medicinal_chemistry.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082a9.bin
ea735af03c1b13845f3f50ddb1a4b4542b40f3d8be677885418bc35cb2246b41
pdf-font-stream PDF embedded font (sfnt) at offset 0x82A9 5244 bytes
font_01_sfnt_off00009484.bin
6be6bc54b9ce0b0894e1a3d8a5e235b4399d6cdb7f8ff9312c2a9b1ca5873088
pdf-font-stream PDF embedded font (sfnt) at offset 0x9484 10120 bytes