Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50add236ca1eaae…

MALICIOUS

PDF

37.4 KB Created: 2020-09-01 22:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a0f3d6645b1061ab05f13caa0cdd503b SHA-1: ba8000ed5d7072de91a560b0452af2656de48147 SHA-256: c50add236ca1eaae62118dffdb3b11c551b503b3f2e0045835fd5a1509158a53
154 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a job application form. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The PDF also contains a large number of external links, suggesting a link farm, with the primary malicious link being the most concerning. No scripts were extracted, but the presence of embedded URLs and the malicious redirector indicate a phishing or redirection attempt.

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.me/wix?keyword=pu+job+application+form In 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/1/0434/0465/6790/files/majenoredomogovanewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/63781986666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/turapuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/webopisozogutane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/3881524499.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a382ee_1275fd7324754e4da23e8f52c083ca03.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e1d12c_328a3c62061c4a45907c1f3b1dc4e72e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4705/9361/files/formalist_criticism_focuses_upon_a_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/pepukuxevoxipinibixeser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/josep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1787/5110/files/79656569888.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_off000054f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F0 5200 bytes
SHA-256: 478234910a94e71d2997864fa77f579a61089e07390c0f7acda8080a52886d32
font_01_sfnt_off00006692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6692 10268 bytes
SHA-256: c2343aa59b83178522c4c07bfdd61b000f36d5977fe62a0c0957be4f21311d08

Open this report in the interactive analyzer, or submit your own file for analysis.