Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e58d0d1d4ab24a9…

MALICIOUS

PDF

35.4 KB Created: 2020-07-10 00:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac5f51e2e997da29ecb12ccaf4a92f64 SHA-1: 7f4d4d278cfc2caddc771fe1fc7a589e01fd64f7 SHA-256: 0e58d0d1d4ab24a98d1d060639444af8b6154bb085477c78440f197cfd9bc341
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links redirects to `https://ttraff.com/wb?keyword=group%20counseling%20strategies%20and%20skills%20free%20pdf`, which is flagged as malicious redirector infrastructure. The document's structure and the nature of the links suggest a link farm or SEO poisoning tactic designed to drive traffic to potentially harmful 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/wb?keyword=group%20counseling%20strategies%20and%20skills%20free%20pdf
    • http://files.pigmentsolution.de/uploads/1/3/1/6/131637219/3603987.pdf
    • http://files.norcalsmartvestorpro.com/uploads/1/3/2/7/132710655/96f0fa3.pdf
    • http://files.a2dsolutions.org/uploads/1/3/1/6/131606550/jovefejejip.pdf
    • http://files.camdenspeedwaytn.com/uploads/1/3/0/8/130814189/feronugifiboze.pdf
    • http://files.backtobal.com/uploads/1/3/1/3/131380210/b9e94d6e306d504.pdf
    • http://files.richardson-community-psychology.com/uploads/1/3/0/8/130874575/52757.pdf
    • http://files.tristatefit.com/uploads/1/3/2/7/132740214/dobijefojul_xojirifiv_ruwiwejeroju.pdf
    • http://files.hurstdesign.net/uploads/1/3/2/7/132710782/sepexuja.pdf
    • http://files.hamlintruefitness.com/uploads/1/3/1/8/131856163/5216078.pdf
    • http://files.sterlingenterprisesllc.com/uploads/1/3/1/4/131454238/rimezofenugiv_molukugevetanis.pdf
    • http://files.texashollandlops.com/uploads/1/3/1/3/131379371/7953459.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://kutuzuxuv.files.wordpress.com/2020/06/durebefako.pdf
    • https://bokevupe.files.wordpress.com/2020/07/nobirumezevekexe.pdf
    • https://jagepoxuro.files.wordpress.com/2020/07/21755864145.pdf
    • https://nikemisar.files.wordpress.com/2020/07/xisajunadimu.pdf
    • https://gavilot137689634.files.wordpress.com/2020/06/rivozizumagagufivo.pdf
    • https://xezerak.files.wordpress.com/2020/07/vemediforuviwerinizapuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51906755497.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_off00004ca8.bin
e50082ce772aa68e8cedb61b82d207d1ce29e96630fb1949af0939d8fc307aa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA8 5300 bytes
font_01_sfnt_off00005ec1.bin
f8da934c3718672498d1b12e9aaa0cea1bc6e40b9155cf241071a8c35b4da019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC1 9780 bytes

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